-Have you seen _________ watch? I left it here this morning.?-I think I saw one somewhere. Is it _________ new one?

　 A. a；/ 　 B. a；the

　 C. the；a 　 D. a；a

This kind of work ______ a lot of time, so you need to start now.

A. takes up　 B. pays for　 C. looks for　 D. gives up

In today’s world, a solar power car isn’t a reality. The technology harvesting power of current solar batteries isn’t advance 48. _____ to efficiently power a car. The problem with this technology isn’t the inability to collect energy, 49. _____ the inability to collect and store enough energy to move a car.

In order to deal with this problem, researchers hope to increase 50. _____ amount of energy each solar battery can produce and reduce the size and weight of batteries needed to collect and store 51. ______. In theory, if the battery size or weight could be reduced by half and the total energy collected 52. _____ one solar battery doubled, the solar car would be available for mass production 53. _____ just a few years.

Nanosolar technology was just the breakthrough car developers and made which promoted the possibility of a solar – powered vehicle. Nanosolar refers 54. _____ a spray on the solar battery that can cover the entire surface area of a car. These dots not only collect energy when the sun is shining, they’re also infrared (红外线的) sensitive, 55. ____ means clouds don’t stop the harvesting of usable energy.

48. enough　 49. but　 50. the　 51. energy　 52. by　 53. in　 54. to　 55. which

I hadn’t expected James to apologize but I had hoped _____ me.

A. him calling 　 　　 B. that he would call

C. him to call 　 　　 D. that he call

I don’t know much about China，t________I can’t advise about that.

It remains ________ whether Jim will be fit enough to play in the finals.

A. seen　　　　　 B. to be seen　　　 C. seeing　　　 　　 D. to see

She would love to have gone to the party, but she _______ extra hours to prepare for a meeting.
 A. had to work      B. had worked
C. could work      D. would have worked

Cindy and Tom like singing and dancing, but _____ students in the class go in for sports.

A. others　 B. the others　 C. the other　 D. another

It’s believed that ________you work, ________result you’ll get.

A. the harder, the better　　　　　 B. the more hard, the more better

C. the harder, a better　　 　　　　 D. more hard, more better