( )1. Researchers from the University of California believe that less sleep ______.
A. makes school life tough and busy
B. is good for one's health
C. makes people less sociable
D. causes people to become excited
( )2. What does the underlined word "weird" in paragraph 5 mean?
A. Strict. B. Strange. C. Friendly. D. Angry.
( )3. What is the main idea of paragraph 4?
A. The proper distance to keep from others is 60 cm.
B. People don't like sharing their personal space.
C. People are more sociable after a good sleep.
D. Don't get too close to sleepless people.
( )4. Matthew Walker would agree that ______.
A. people who sleep less are weird
B. loneliness makes people sleep more
C. popular people always sleep well
D. sleeping well makes people confident

1. C
2. B
3. C
4. D

1. 题目问的是加州大学的研究者们认为较少的睡眠会有什么影响。根据文章中的“According to researchers from the University of California, people who don't get enough sleep are less willing to socialize(社交) with others.”可知，睡眠不足的人不太愿意与他人交往，即较少的睡眠会使人不太善于社交。选项C与此相符。
A选项提到学校生活艰难和忙碌，但这是文章开头提到的普遍现象，并非研究者们的观点。
B选项与文章中的“not getting enough sleep is not good for our health”相悖。
D选项在文章中没有提及。
因此，答案是C。
2. 题目问的是第五段中划线单词“weird”的意思。根据文章中的“In turn, other people may think you are weird and stay away from you.”可知，如果睡眠不足，其他人可能会认为你怎样并远离你。根据上下文及常识可以推断，这里“weird”应该是“奇怪”的意思，与选项B相符。
A选项“Strict”意为“严格的”，与文意不符。
C选项“Friendly”意为“友好的”，与文意相反。
D选项“Angry”意为“生气的”，同样与文意不符。
因此，答案是B。
3. 题目问的是第四段的主要意思。第四段主要描述了研究者们做的一个实验，实验结果显示，如果参与者没有得到足够的睡眠，他们会将视频中的人保持在更远的距离。这说明人们在得到良好的睡眠后更善于社交。选项C与此相符。
A选项提到的60 cm只是实验中的一个数据，不是主要意思。
B选项虽然涉及个人空间，但不是第四段的主要讨论点。
D选项是对实验结果的一个错误解读，实验并没有说不要靠近睡眠不足的人。
因此，答案是C。
4. 题目问的是Matthew Walker会同意哪个观点。根据文章中的“One night of good sleep makes you feel more outgoing and socially confident,” Walker told Daily Mail.可知，Matthew Walker认为一晚的良好睡眠会让你感觉更外向和自信。选项D与此相符。
A选项提到的“weird”是文章中的观点，但不是Matthew Walker直接提出的。
B选项与文章中的“This can make you feel lonely and cause you to sleep even less”相悖。
C选项过于绝对，文章并没有提到所有受欢迎的人都睡得很好。
因此，答案是D。