单选题 {{B}}Task 1 Directions:{{/B}}{{I}} After reading the following passage, you
will find 5 questions or unfinished statements, numbered 36 to 40. For each
question or statement there are 4 choices marked A, B, C and D. You should make
the correct choice and mark the corresponding letter on the Answer Sheet with a
single line through the centre.{{/I}}
Cars are lots of fun, but they could
also be dangerous. We have to be careful when we drive them or ride in
them. It's always a good idea to put on your seat belt when
you're in a car. Why? Think about this example: You put an egg on a
skateboard(滑板) and give it a push. If the skateboard hits a stone, it will stop,
but the egg won't. It will fly through the air, hit the ground and
break. Now, think what would happen if you tied the egg to the
skateboard. When the skateboard hits a stone, the egg won't go flying. It will
stay safely on the skateboard. Volvo, a famous Swedish carmaker,
was the first to use seat belts in 1949. Air bags are also very important for
car safety, because sometimes a seat belt isn't enough. If the car is going
really fast and runs into something, seat belts could even hurt the people who
wear them. Most newer cars have air bags in front of and next to
the seats. When a car hits something, its air bags will come out quickly--in
less than one second--to keep the people inside
safe.
单选题
We have to be careful in driving a car mainly because it could be ______.
【正确答案】
D
【答案解析】[解题思路] 细节题。由题干be careful定位到文章第一段的第一句话“ Cars are lots of fun，but they could also be dangerous．”开车小心的原因是因为“汽车同样电可能带来危险。”此句叙述与选项D一致。A、B、C项与原文不符，因此，答案是D。
单选题
The example of an egg on a skateboard is used to show that ______.