My younger brother and I were alone at home.I was doing my homework while my brother was watching TV.Suddenly the doorbell rang. My brother rushed to the door thinking that our parents had come home; he unlocked the door and opened it.

Outside stood a tall man wearing a black raincoat and black boots. He said that he was a salesman and asked politely if our mother or father was at home.Without thinking, my brother said,“No.”He asked if we would like to buy some books.I explained that we were not supposed to buy anything without our parents’ permission. As I was about to close the door,he forced his way into our house, took out a knife and forced me to tie up my brother’s hands with a rope which he took out from his pocket. I tied up his hands but I tied it in a special way so my brother could unite himself. The man then tied my hands up and locked both of us in the kitchen.

Soon he went upstairs to search the bedroom for valuables. I managed to teach my brother to unite the rope on his hands. He then united me. I rushed to the telephone to call the police,but the line was dead. The doors were all locked from the outside. Luckily, the robber forgot to lock the kitchen window. My brother managed to go out of the house through the windows and I told him to go to the neighborhood police post and ask for help.

My brother brought the police to our house and the robber was caught. Soon, our parents came home. My parents were thankful that we were not hurt but they said I should have stopped my brother from opening the door to strangers. I learned a lesson on safety.

21. Before opening the door, the author’s brother __________.

     A. thought it was one of his friends         B. didn’t ask who it was

     C. knew it was a stranger                 D. felt very frighted

22. We learned from the second paragraph that ___________.

   A.the author let the stranger in

   B.the man left the author at a loss

   C.the author wanted to buy some books

   D.the author obeyed his parents

23. We can infer from the text that ______________.

   A. the robber had locked all the doors from the outside

   B. the parents were sorry for not teaching their children about safety

   C. the author was strong enough to fight with the robber

   D.the neighbor helped the two brothers call the police

San Francisco is a great city. It is lively and friendly, and has many things to do. Below you’ll find some ideas about activities and programs in San Francisco for the summer.

The San Francisco School: Summer Program

   There are camps for pre-kindergarten（学前班）through middle school at The San Francisco School. With programs like “Fearless Writing”, “Making A Green World:Re-Making Clothing” and so much more(check which programs are for which ages). This is a great place for children to have fun in the summer. Registration(登记) starts in the spring.

San Francisco Art Institute Community Education

   Children to elders are welcome to sign up for all sorts of art classes all year round, such as Adult Continuing Education,Pre-College programs, and a Young Artist program. Check website for schedules, class types, age groups and more or call 415-749-4500.

San Francisco University High School: Summer Program

   This is a great program preparing kids for college. Academic classes in the morning and social classes such as drama, sports, music in the afternoon. There are also other activities such as a field day, an evening party, a talent show and much more.30-35 sixth grade children are selected each summer, so you have to fill out an application form. See more about it on its website.

Rudolf Steiner College Summer Programs

   Rudolf Steiner has summer programs for teachers who want to take courses such as teaching grade courses 1-8, High School Teacher Education program, working with Pre-School children, Languages, Arts and more. Registration is at the beginning of the April.

24. What can we learn about Summer Programs in the San Francisco School?

   A. It usually begins in the spring.

   B. It doesn’t offer academic classes.

   C. It is for children from pre-kindergarten.

   D. It has programs about environmental protection.

25. The advantage of programs of San Francisco Art Institute Community Education is that ____.

   A. it is free for children

   B. children of different ages can take part

   C. schedules can be found on its website

   D. children can attend art classes at any season

26. Which of the following is best for Jim if he wants to go to college next year?

   A. The Summer Program in the San Francisco School.

   B. San Francisco Art Institute Community Education.

   C. The Summer Programs in Rudolf Steiner College.

   D. The Summer Program in San Francisco University High School.

27. In writing this passage, the author aims to _____.

   A. attract people to travel in San Francisco

   B. introduce educational programs in San Francisco

   C. show the beautiful scenery of San Francisco

   D. introduce some good schools in San Francisco

  Driving in Canada is similar to driving in many parts of the United States. Distances and speeds, however, are posted in kilometers per hour and some signs, particularly in Quebec, may only be in French.

  Unless otherwise posted, the maximum (最大限度的) speed limit in Canada is 50km/hr in cities and 80km/hr on highways. On rural highways, the posted speed limit may be 100km/hr. It is not allowed to take automobile radar detectors (汽车雷达检测器) into Quebec, Ontario, Manitoba, and the Yukon. Seat belt use is required by law for all passengers, and child car seats must be used by children under 40 pounds. Some provinces require drivers to keep their vehicles’ headlights on during the day and some have banned (禁止) driving while using a hand-held cell phone.

   Motorcycles cannot share a lane (车道), and safety helmets for motorcycle riders and passengers are necessary. Running a red light is a serious crime throughout Canada and drivers are advised to stop before starting when a light turns green.

   Winter travel can be dangerous due to heavy snowfalls and icy conditions. Some roads and bridges are often closed in winter. Snow tires are required in some provinces. Travelers should also be careful about animals while driving at night in rural areas. 

  Highway 401, from Detroit to Montreal, is one of the busiest highways in North America. It has been the scene of many traffic accidents due to sudden and severe weather changes, high rates of speed, and heavy truck traffic. Thus drivers should be alert while travelling here.

   Please refer to our Road Safety page for more information and tips . Also, we suggest that you visit the website of Canada’s national authority responsible for road safety.

28. Which of the following is TRUE according to the text?

  A．All signs on the roads in Quebec are in English.

  B．Automobile radar detectors are allowed to be used in Manitoba.

  C．Passengers may choose not to wear seat belts while in a car in Canada.

  D．The speed of cars in Canadian cities should be less than 50km/hr.

29.Which of the following is NOT mentioned that have led to deadly accidents on Highway 401?

  A．Bad weather       B．Drunk driving       C．High speed        D．Heavy traffic

30.What is the best title for the text?

  A．Different traffic rules in Canada .           B．Tips for traveling by car in Canada .

  C．Special rules for driving in Canada .   D．Traffic safety and road conditions in Canada .

31.This passage is mainly written for the _________.

     A．drivers in Canada                          B．Drivers in America

     C．Traffic police in Canada                   D．Traffic police in America

  For the Marine Mammal Center (海洋哺乳动物中心），Thursday was an important day: rescued sea lion No.10,000,called Milestone, and 10.001, Zodiac Girl, had been nursed back to health and sent back to the wild where they belong.

   Since it opened its doors 36 years ago, the center has become famous for nursing sick marine animals back to health- but its biggest contribution perhaps has been its role in collecting and storing thousands of tissue (生物组织) from the animals it rescues along 600 miles of California coast. The center has published lots of scientific papers and helped develop understanding of effects of disease and the effect of climate (气候) changed on marine animals.

   California sea lions share common characteristics with Steller sea lions, which are an endangered species. The center’s researchers say collecting and storing scientific information from many of the thousands of sea lions can help to save Stellers.

   “We are learning about marine mammal health through all these patients. Before 1975, there was never anything been regularly recorded in detail, so it wasn’t possible to get animal tissue, ”said Jim Oswald, the center’s spokesman.

   Though the sea lions didn’t like to be sent back home in the Pacific Ocean, their time spent at the center provided scientists with the information being used to control and prevent some common diseases.

   The two animals had leptospirosis, which could be fatal to them. Dogs and humans can also get the disease. What made the scientists feel strange is that hundred of California sea lions suffered from the disease every four or five years. While no answer to the mystery has been found, the center’s data collection is helping researchers move closer.

32. Thursday was special for the Marine Mammal Center mainly because ______.

   A. it got evidence about a new disease

   B. it was the date when it was founded 36 years ago

   C. it celebrated saving more than ten thousand sea lions

   D. it helped Milestone and Zodiac Girl out of trouble

33. The most important role of the Marine Mammal Center lies in ___________.

   A. collecting information about marine life

   B. nursing sick marine animals back to health

   C. publishing scientific papers about animals

   D. helping people understand the effect of climate change

34. The underlined word “fatal” in Paragraph 6 means “____”.

   A. rare     B. funny    C. useful    D. deadly

35. Which of the following is NOT true according to the text?

   A. Sea lions suffer from leptospirosis every four or five years.

   B. Both California sea lions and Steller seas are endangered species.

   C. California sea lions share a lot in common with Stellers.

   D. Dogs and humans may also suffer from leptospirosis.

The power of sleep

   While no one knows exactly why you sleep, it’s clear you can’t live without it. Your brain needs sleep to help you pay attention, think of new ideas, and remember what you learn.   36    If you don’t get enough sleep, a school assignment that’s normally easy may feel impossible, or you may feel clumsy playing your favorite sport.

37   Each stage has unique brainwaves that can be measured during a brain test called an EEG(脑电图). Sleep stages repeat throughout the night in 90-minute cycles.

Non-rapid eye movement (NREM) sleep

Stage 1: Light sleep. In this phase, your body gradually relaxes and brainwave activity starts to slow down. If you wake up now, you may not even know you were asleep at all.

Stage 2: True sleep. In this phase, your breathing and heart beat get slower, but waking up is still easy.

Stage 3: Deep sleep. In this phase, your blood pressure and body temperature drop slightly.  38

Rapid eye movement (REM) sleep

This stage comes after stage three and gets its name from the flickering(来回移动的) eye movements that occur here.   39   An EEG shows a brainwave pattern similar to waking. This is the dreaming stage. It’s also the stage that helps you remember what you learn.

Darkness and dim(昏暗的) lights increase production of a powerful brain chemical (melatonin) that makes you feel tired and sleep through the night. But sunshine and bright lights block melatonin production to help you wake up and stay active all day.

Sleep tip:  40  A dim nightlight is fine, but even the light from digital screens can make it hard to fall asleep.

A. Your breathing and heart beat speed up.

B. Different people have different sleep cycles.

C. Sleep has different stages.

D. Your body needs sleep to grow, fix injuries, and fight sickness.

E. Very slow brainwaves take over and it’s hard to wake up.

F. When you go to bed, keep your room dark.

G. If you can, turn on bright lights and open the window.