The research lacks ___evidence,and therefore,its conclusions are doubtful
| A．solid |
| B．fierce |
| C．severe |
| D．potential |
Taking charge of such a big company, I’m afraid, is _____ his ability.
| A．beyond | B．within | C．of | D．to |
—I counted sheep, I drank milk and I tried everything, but nothing helped.
—It seems you _____ too much recently. Try some sleeping pills.
| A．worked | B．will be working |
| C．had worked | D．have been working |
He turns deaf ear to his parents, many times they have pointed out his weaknesses.
| A．whatever | B．whichever | C．whenever | D．however |
The new CRH train between Beijing and Shanghai _______ speed can reach about 380k. p.h will benefit people a lot.
| A．whose | B．where | C．that | D．when |
—You’ve been driving for hours．Shall I ________？
—No, that’s OK．I enjoy driving and I know you hate it, especially on the highway．
| A．take back | B．take on | C．take over | D．take up |