单选题 John is a famous writer now, but he said he was not a (16) student when he was young. He was often late for (17) and didn't like doing his homework. Sometimes, he slept in class while the teacher was teaching. He didn't understand much, (18) he always thought he understood everything. One day the teacher (19) the students a question, "When Jack was ten years old, (20) brother Bob was twenty. Jack is fifteen now and (21) is his brother Bob?" John said, "That's easy. Bob is twice as old as Jack, so he is now thirty."
Another time, the (22) in science class asked, "When it thunders (打雷), (23) do we always see the light before we (24) the sound?"
"But, Miss," said John quickly, "don't you (25) our eyes are in front of our ears?/

【正确答案】 A
【答案解析】首句话告诉我们“John现在是位著名的作家”，而年轻时“个子的高矮”或“钱财的多少”均与此无关，所以选A“不是个好学生”。
【正确答案】 C
【答案解析】不爱学习所以经常“上课迟到”。
【正确答案】 B
【答案解析】前面的“懂得不多”与后面的“什么都懂”是一对转折关系。
【正确答案】 A
【答案解析】ask sb. a question意为“问某人一个问题”，sent意为“递、送”，told意为“告诉”。
【正确答案】 B
【答案解析】Jack为第三人称，故用his来代替。
【正确答案】 A
【答案解析】how old意为“多大，几岁”，how many意为“多少”，what意为“什么”。
【正确答案】 C
【答案解析】“in science class”问学生问题的当然是teacher(老师)而不是farmer(农民)或nurse(护士)。
【正确答案】 C
【答案解析】老师问：“打雷时，我们为什么总是先看到闪电后才听到雷声呢?”
【正确答案】 B
【答案解析】hear the sound意为“听到声音”。break意为“打碎”，smell意为“闻”。
【正确答案】 A
【答案解析】“眼睛长在耳朵前面”是既无需study(学习)也无需read(阅读)的常识，故选know(知道)。