1 . 根据语境，选择下框中的单词或短语换句中划线部分的单词或短语，必要时用正确的形式，使之意思一致。

imply        assess        demonstrate        employ       distinguish       witness     interact

1. When we think about nonverbal behavior, or body language, we think about communication.
2. Modern methods of tracking polar bear populations have been used only since the mid-1980s.
3. In Japan, it may display respect to look down when talking to an older person.
4. In a sense, it’s human nature to judge the advantages and disadvantages of decisions all the time.
5. Several journalists saw the incident happen in which eight people were injured.
6. The teacher’s smile suggested that she had forgiven the students.
7. An open-source discussion makes it challenging for users to recognize the difference between truth and rumors.

2 . 从括号内选出与各句中画线部分意思相同或相近的词或者短语。
1. It's not safe for her to go out alone at night. (A.secure/B.normal)
2. Later at night, you should turn off your cell phone. (A.switch off/B.put off)
3. The policeman has followed the thief for many days. (A.caught/B.kept rack of)
4. In the early days people made payment by the weight of their silver or gold. (A.later on/B.Early on)
5. She dreamed of spending the rest of her life on a faraway island. (A.lonely/B.remote)
6. Science and technology make it possible for scientists to explore the universe. (A.potential/B.easy)
7. They were eventually convinced by the police to give themselves up. (A.persuaded/B. opposed)

3 . 根据语境，选择下框中的单词，必要时用其正确的形式替换句中划线部分的单词，使之意思一致。

potential          circumstance          objective          encounter nevertheless        detect          acknowledge

1. There is little chance that we will succeed in changing the law. However, it is important that we try.
2. I did not admit that he had done anything wrong.
3. The company reserves the right to cancel this agreement in certain conditions.
4. We experienced a number of difficulties in the first week.
5. The European marketplace offers excellent possibility for increasing sales.
6. The tests are designed to discover the disease early.
7. The main purpose of this meeting is to give more information on our plans.

4 . To our left, snow-covered mountains _________________ that seem almost close enough to touch. （根据句意填空）