这小孩太调皮，使得他那忙于工作的父母常常心烦意乱。

单项选择题What do we learn from the passage about solar wind activity（）

A. It affects the growth of trees.
B. It has been increasing since the Ice Age.
C. It is determined by the chemicals in the air.
D. It follows a certain cycle.

单项选择题According to the passage,（） is a necessary part to stop you from putting in weight.

A. vegetables
B. water
C. salad
D. taking exercise

单项选择题The underlined phrase throw off probably means（）.

A. give away
B. cast
C. send for
D. get rid of

问答题那就让这事再骗他们一会儿吧，无论怎样骗他们都不算过分。

单项选择题第（2）空应选择（）

A. business    
B. responsibility   
C. excuse      
D. fault

单项选择题Enjoy your holidays without putting on weight, and you’d better（）.

A. drink much water and have vegetables only
B. not eat much food in high fat
C. not take part in the parties
D. turn away from delicious foods

单项选择题When the sun burn fiercely, （） carbon-14 is produced.

A. less
B. more
C. no
D. much

问答题我走到售票台。女售票员一看见我，她那原本颇为动人的脸刷地一沉，变得怒气冲冲。

单项选择题Holidays are happy days with pleasure but they may（）.

A. bring weight problems
B. bring you much trouble in your life
C. make you worried about your life
D. make you hate delicious foods

单项选择题According to the passage, the issue to offer free tickets to young people seems（）.

A. controversial
B. inspiring
C. exciting
D. unreasonable