某气体分子的相对质量为X，NA表示阿伏加德罗常数的值，在一定温度和压强下，体积为

With a lot of difficult problems________，the newlyelected president is having a hard time.[ ]

A．settled  

B．settling

C．to settle  

D．being settled

经济学家熊彼特提出，投资活动建立在创新的基础之上，是不断重复发生的，而经济正是通过这些来运转其上的。但这个过程基本上是不平衡的、不连续的并且是不和谐的。这种理论被称为（）。

A.消费不足理论

B.心理理论

C.创新理论

D.政治周期理论

对于放射性¹³¹I治疗甲亢，以下不正确的是

A．甲状腺不能摄碘者禁用
B．如治疗未缓解，6个月后可行第2次切除
C．严重心、肾、肝功能衰竭而不能耐受手术者
D．非自身免疫性家族性毒性甲状腺肿者

Ladji Doucoure of France beat Olympic champion Liu Xiang of China in the final meters to claim the title of the men’s 110 meters hurdles at the 10^th world championships in Helsinki on Friday.

Doucoure, who led the world this season with 12.97 seconds, over took the Chinese to win the race in 13.07 seconds. Liu was second in 13.08. Four-time world champion Allen Johnson of the United States took the third in 13.10.

The 22-year-old Doucoure said after the race, “ I can not tell you just how long I have been dreaming of this. This victory is the result of a lot of hard work, and also a lot of support from people who have believed in me. I had a bad start, touched a few hurdles, but after the 4^th hurdle I picked up my race and went straight to the finish line.”

Liu, who won the Olympic gold with a world record-tying time of 12.91 seconds, said, “I’m very satisfied with the second place. The result could have been worse. I felt quite well and did my best. I’ m not tired, I had some clearance problems at the start, so I should practice that some mor. Finally, I didn’t lose by much, only by a little bit, but I did think I could win it.”

Liu’s coach, Sun Haiping said on Friday he was content with Liu’s performance.

“ Liu Xiang was quite good during his reaction period, but he was a little bit slow in the middle and he finally caught up during the last two hurdles,” Sun told Xinhua.

Although satisfied with the silver medal and the clocking of 13.08 seconds, Sun said Liu might have added the world title to the Olympic championship if Liu had run the track neighboring his major rivals(对手) of Doucoure Ladji or Allen Johnson.

“ If he had run next to Ladji Doucoure or Allen Johnson, Liu could have kept pace with them and then sprinted(疾跑) at the last stage. In this case, he could grab the gold,” said Sun, who had become a household name for coaching China’s first men’s Olympic champion in the track.

小题1:This passage probably appears_________.

A．in a story book

B．in a text book

C．in a newspaper

D．in a fashion magazine小题2:The following statements about Doucoure are true EXCEPT_______.

A．He won the gold medal in the men’s 110m hurdles in Helsinki.

B．He led the world in the men’s 110m hurdles with 12.97 seconds this season.

C．He did a lot of hard practice before the race in Helsinki.

D．He won the world champion title four times.小题3:Which of the following can be used to replace the underlined phrase“picked up my race”in Paragraph 3?

A．gathered speed

B．stood up

C．make up my mind

D．became better in health小题4:According to Sun Haiping, Liu Xiang might have won the gold if ______.

A．he had done better during his reaction period

B．he had run the track next to Ladji Doucoure of Allen Johnson

C．he had practiced clearance more before that race

D．he hadn’t touched a few hurdles in the race

2011年3月23日在美国总统奥巴马下令对利比亚采取军事行动后，一些美国国会议员纷纷对奥巴马的举动表示强烈质疑，称其在未经国会批准的情况下就把美国卷入军事行动，已涉嫌违宪。材料体现了美国1787年宪法中所规定的（）

A.联邦制原则

B.自由平等原则

C.权力制衡原则

D.共和原则