Estuaries provide both recreation and education for human beings. They also _____ the economy through tourism and fishing.
| A．contribute to | B．adapt to | C．respond to | D．apply to |
Most people hold the view that the key to keeping fit is to ______ regularly．
| A．give out | B．turn out | C．work out | D．get out |
At the Qiantang River on September 24thlast year, the tidal bore, a name for a large column of water produced by the tide, _____ as high as 1．9 metres,the start of the autumn flood period of the liver．
| A．reaching marking | B．reached; to mark |
| C．reaching; to mark | D．reached; marking |
—Given its breathtaking natural landscape and a relaxing atmosphere—most stores in Norway are closed at 5 o'clock every day．
—It's _______ that Norway has the highest quality of life．
| A．no wonder | B．no problem | C．no doubt | D．no way |
—Mum, have you seen my U-Disk?
—_______ you bought last Sunday? I'm-afraid I haven't seen _______．
| A．The one- one | B．That: one | C．One; it | D．The one; it |
I smoke out of ______ habit, not for ______ pleasure; for I have been in the habit for more than twenty years．
| A．the; a | B．不填; the | C．a: the | D．不填; 不填 |