一、选用方框内的单词或词组填空，其中有一个单词或词组是多余的。
percentage aliens survey worried does harm to risk
1. —Frank, you look ____________. Anything wrong?
—My mum fell over and was badly hurt while she was crossing a road on a rainy day.
2. Polluted air ____________ our health. It's necessary to keep air fresh and clean.
3. What's the ____________ of the people dying of this disease every year?
4. Some people believe that ____________ from other planets have visited the Earth.
5. They are making a ____________ of the pressure of the students.

1. worried 2. does harm to 3. percentage 4. aliens 5. survey

二、根据句子意思，用括号中所给单词的正确形式填空。
1. There will be little space for people ____________（stand）in in the future, will there?
2. The plans have been under ____________（discuss）for a year now.
3. This kind of bike is easy to ride, but there's a ____________（advantage）that can't be ignored.
4. When Princess of Wales finally appeared in public, she looked weak and ____________（worry）.
5. This will be ____________（danger）because we can easily jump too high and float off into space.

1. to stand 2. discussion 3. disadvantage 4. worried 5. dangerous

( )1. Sixty percent of the teachers ________ now living around the school.
A. is B. are C. has D. have

1. B 【点拨】“百分数+of+复数名词”作主语时，谓语动词用复数形式；根据 now 可知应为现在进行时。故选 B。

( )2. —It's dangerous to drive after drinking.
—That's true. It can increase the ________ of traffic accidents.
A. advantage B. stress C. safety D. risk

2. D 【点拨】句意：——酒后开车是危险的。——那是真的。酒后开车会增加交通事故的风险。risk 风险。故选 D。

( )3. The birthday party of last night ________ the song Happy Birthday to You.
A. starts in B. started with C. started in D. starts with

3. B 【点拨】表示“以……开始”用 start with；根据 last night 可知此处应用一般过去时。故选 B。

( )4. —Jim, would you please tidy up your room by yourself? ________, you are no longer a child.
—All right, I'm coming.
A. First of all B. After all
C. As a result D. For example

4. B 【点拨】first of all 首先；after all 毕竟；as a result 结果；for example 例如。根据语境可知选 B。