Vitamins are organic compounds
necessary in small amounts in the diet for the normal growth and maintenance of
life of animals, including man.
They do not provide energy,
(31) do they construct or build any part of the body. They
are needed for (32) foods into energy and body maintenance.
There are thirteen or more of them, and if (33) is missing a
deficiency disease becomes (34)
Vitamins are
similar because they are made of the same elements—usually carbon, hydrogen,
oxygen, and (35) nitrogen. They are different (36)
their elements are arranged differently, and each vitamin
(37) one or more specific functions in the body.
(38) enoug
A. either
B. so
C. nor
D. never
更多"Directions: For each blank
in the"的相关试题:
[单项选择]
Directions:
For each blank in the following passage, choose the best answer from the choices given below. Mark your answer on the Answer Sheet by drawing with a pencil a short bar across the corresponding letter in the brackets.
Recruiting(招募) the right candidate to fill a vacancy can be a difficult and costly task. (31) the wrong person could be an expensive mistake which could cause personal problems for the whole department. And, as every HR(Human Resource) manager knows, it is much more difficult to get rid of someone than it is to (32) them. The HR manager’s first decision is (33) to recruit internal applicants or advertise the vacancy outside the company. (34) applicants are easy to recruit by memo, e-mail, or newsletter. Furthermore, they are easy to assess and know the company well. (35) , they rarely bring fresh ideas to a position. More- over, a rejected internal candidate might become unhappy and leave the
A. Finding
B. Appointing
C. Placing
D. Searching
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