膳食营养与高血压的关系？

温经汤与归脾汤组成中均含有的药物有（）

A.黄芪、甘草

B.人参、当归

C.芍药、川芎

D.阿胶、麦冬

E.桂枝、甘草

用锯条锯木头，锯条的温度升高，内能______，这是通过______方式使锯条内能改变的．

对于双侧中枢性面瘫，下列正确的是：（）

A.不能闭眼

B.不能睁眼

C.不能皱额

D.不能吹口哨

E.口角歪斜

The history of African—Americans during the past 400 years is traditionally narrated (1) an ongoing struggle against (2) and indifference on the part of the American mainstream, and a struggle (3) as an upward movement is (4) toward ever more justice and opportunity.

Technology in and of (5) is not at fault; it’s much too simple to say that gunpowder or agricultural machinery or fiber optics (6) been the enemy of an (7) group of people. A certain machine is put (8) work in a certain way—the purpose (9) which it was designed. The people who design the machines are not intent on unleashing chaos; they are usually trying to (10) a task more quickly, cleanly, or cheaply, (11) the imperative of innovation and efficiency that has ruled Western civilization (12) the Renaissance.

Mastery of technology is second only (13) money as the true measure of accomplishment in this country, and it is very likely that by (14) this under-representation in the technological realm, and by not questioning and examining the folkways that have (15) it, blacks are allowing. (16) to be kept out of the mainstream once again. This time, however, they will be (17) from the greatest cash engine of the twenty-first century. Inner-city blacks in particular are in danger, and the beautiful suburbs (18) ring the decay of Hartford, shed the past and learn to exist without contemplating or encountering the tragedy of the inner city.

And blacks must change as well. The ways that (19) their ancestors through captivity and coming to freedom have begun to loose their utility. If blacks (20) to survive as full participants in this society, they have to understand what works now.

6（）

A. have

B. to have

C. has

D. to has

驾驶员要坚持“六不”，（不开冷车、不要熄火、不加空油、不加急速、不能拖档、不用急刹）原则指导节油驾驶。