4. The workers finally called off the strike.
A. put off       　B. gave off
C. cancelled     D. ended
C.   考点：考察常见短语的用法。来源：考试大
call off v. 取消
call for v. 需要；要求；来源：考试大
The occasion calls for a cool head. 这种场合需要冷静的头脑。
call forth唤起；引起
call on 拜访
I'll call on him tomorrow. 明天我去拜访他。
call up 召集；动员
give off v.发出(蒸汽、光等)，长出（枝、杈等）来源：考试大
give up v.放弃(念头、希望等), 停止

5. Traditional Chinese medicine is famous for using herbs(香草) with  healing properties.
A. possessions       B. components
C. attributes       　 D. purposes
C． 线索：借助搭配结构含义判断答案（“有治疗（特性）的香草”最合适。）
possession n.有, 所有, 拥有； [pl. ]所有物; 财产, 财富; 所有权
personal possessions 个人财产

6. I catch a cold now and then.来源：考试大
A. always                B. occasionally
C. constantly       　 D. regularly
B．分析：考察常见副词短语结构。借助“近义词相互排除”的思路直接排除A，C和D。
now and then adv.偶尔

7. I am sorry I can’t grasp the meaning of the book you asked me to read yesterday.
A. understand        B. take
C. accept            　D. agree
A．分析：考察常见词的用法。来源：考试大

8. Many fine cooks insist on ingredients （成分）of the highest quality.
A. demand                B. rely on
C. prepare for      　 D. create
A.   分析：考察常见短语。
Insist on: v. 坚决认为, 坚决要求(on, upon)来源：考试大
insist on sb.'s innocence坚持认为某人无罪
I insisted on his coming with us.我坚持要求他和我们一起来
Stick to: v. 坚持(原则或决定)
stick to basic principles.基本原则
rely on v.依赖, 依靠
prepare for v.准备, 使有准备来源：考试大

比较：survive v.幸免于, 幸存, 生还
e.g. plants that can survive frosts.历经寒霜而存活的植物
provide: provide sth. for../provide sb. with sth.
supply: supply sth. for../supply sb. with sth.
supply/meet/satisfy needs
inform sb. of ..
demand: demand sth.
ask: ask for sth./ask sb. to do sth. /ask sb. sth. (询问某人…)