当前，黄土高原地区最严重的问题是（ ） A．地震 B．台风 C．水土流失 D．火

痰浊头痛，应配合()

A.三阴交、肝俞、脾俞

B.太溪、肾俞、悬钟

C.太阳、丰隆、阴陵泉

D.太冲、太溪、侠溪

E.列缺、曲池、大椎

既能解表散寒、祛风止痛、通鼻窍，又能燥湿止带、消肿排脓的药物是（）

A.细辛

B.桂枝

C.白芷

D.羌活

E.防风

我国传统交通地理的显著特点是[ ]

A．“南马北船”

B．“南船北马”

C．“南车北船”

D．“南马北车”

某农场拟于2006年初在某河流上游植树造林500公顷，需要各类投资共5000万元。农场将承包该林地并拟于2012年初择伐林木后，将林地无偿移交给地方政府。预计所伐木材销售净收入为每公顷12万元。

由于流域水土得到保持，气候环境得到改善，预计流域内3万亩农田粮食作物从2007年起到择伐树木时止，每年将净增产360万公斤，每公斤粮食售价1.5元。假设银行贷款利率和财务基准收益率均为6%，社会折现率为10%，不存在价格扭曲现象。

在对本项目的评估论证中，某咨询工程师认为应从国民经济评价的角度，分析项目的经济合理性，农作物增产收入应看作是本项目的经济效益。你是否赞同其观点简述理由。计算本项目的经济净现值，分析本项目是否经济合理。

Exercising to music pumps up brain power

If music makes you smarter, and exercise helps brain function, can exercising to music really boost brainpower Some researchers said it can. Volunteers who listened to Vivaldi’s "Four Seasons" while working out on a treadmill did much better on a test of (1) ability than when they exercised without music, a team (2) Ohio State University found.
"Evidence suggests that exercise improves the (3) performance of people with coronary artery (4) ," said psychologist Charles Emery, who led the study.
"And listening to music is (5) to enhance brainpower. We wanted to put the two results together," Emery (6) in a statement.
Writing in the latest issue of the journal Heart & Lung, Emery and (7) said they studied 33 men and women taking (8) in a cardiac rehabilitation program after having bypass (9) , angioplasty or other procedures to treat clogged arteries.
The (10) said they felt better emotionally and mentally after working out (11) or without the music. But their improvement on the (12) fluency test doubled after listening to music on the treadmills.
"Exercise seems to (13) positive changes in the nervous system, and these changes may have a (14) effect on cognitive ability," Emery said.
"Listening to music may (15) cognitive function through different pathways in the brain. The combination of music (16) exercise may stimulate and increase cognitive arousal (17) helping to organize cognitive output."
Emery said he now wanted to (18) people using music of their own choice. "We used the ’Four Seasons’ because of its (19) tempo and positive effects on medical patients in previous (20) ," Emery said. "But given the range of music preferences among patients, it’s especially important to evaluate the influence of other types of music on cognitive outcomes.\