正确答案: C

血糖水平

题目：调节胰岛素分泌最重要的因素是 （ ）

解析：C

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举一反三的答案和解析：

[单选题]种群的性别比例直接影响种群的繁殖力，两性花植物种群的繁殖（　　）

不考虑性别比例问题

[单选题]第 24 题 智力的核心成分是（　　）

抽象思维能力

[单选题]Did you ever have someone's name on the tip of your tongue and yet you were unable to recall it? (21) this happens again, do not try to recall it. Do something (22) for a couple of minutes, and the name may come into your head. The name is there. Since you have met (23) person and learned his name. It only has to be dug out. The initial effort to recall (24) the mind for operation, but it is the subconscious (25) that go to work to dig up a dim memory. Forcing yourself to recall almost never helps because it doesn't loosen your memory; it only tightens it. Students find the preparatory method helpful (26) examinations. They read over the questions (27) trying to answer any of them. Then they answer first the ones (28) which they are most confident. Meanwhile, deeper mental activities in the subconscious mind are taking (29) ; work is being done on the more difficult question. By the time the easier questions are answered, answers to the more difficult ones will usually begin to (30) into consciousness. It is often just a question of waiting for recall to come to the memory.21.

When

解析：

21．答案为B  根据句意，空格为“当……时”或“如果”。

[单选题]When we ______ the museum is not decided.

will visit

解析：

    20．答案为C  句子的前半部分是主语从句，主语从句中的谓语动词时态应根据句意而定。

[单选题]《小二黑结婚》是我国文学史上________的代表作之一。 ( )

山药蛋派

[单选题]结肠带、结肠袋、肠脂垂存在于 （ ）

盲肠

[单选题]鼻泪管末端的开口部位是( )

下鼻道

[单选题]

watch

解析：D

[单选题]十二指肠悬韧带( )

是空肠起始的标志