问题
单项选择题
正常人全血的比重主要取决于（）
A.血浆蛋白质的含量
B.血浆中晶体物质的含量
C.红细胞的数量
D.白细胞的数量
E.血小板的数量
答案
参考答案：C
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正常人全血的比重主要取决于（）
A.血浆蛋白质的含量
B.血浆中晶体物质的含量
C.红细胞的数量
D.白细胞的数量
E.血小板的数量
参考答案：C
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| IF and WHEN often had lunch together. Their conversation always 1 on the things they hoped to achieve and they loved to talk about them. This particular Saturday when they met for lunch, WHEN 2 IF wasn't in a great mood (心情). After they sat at the usual table 3 for them, WHEN asked IF, "You don't seem your usual 4 self?" IF replied, "Yesterday I saw a course I wanted to take. If only I 5 the time." WHEN knew exactly how IF felt and said, "I too saw a 6 and I' m going to register when I get 7 money." WHEN then questioned IF, "What about the new job you were going to apply for?" IF answered, "I would have applied, but my 8 broke down. I couldn't type my resume (简历)." "Don't worry. I've been thinking about looking for another job also, 9 I'll wait and when the weather gets 10 I will look then. I hate this awful weather." The man sitting nearby heard them talking about when this and if that. When he couldn't 11 it anymore, he went to them and said, "I think I know 12 you could solve your problems." IF smiled and thought that even if he knew the 13 they faced, there was no way he could help! 14 , IF asked the man for advice. The man said, "Your conversation reminds me of an old 15 : IF and WHEN were planted, and nothing 16 ." IF and WHEN both looked surprised and began to feel 17 of living their life for the "ifs" and "whens". Finally they came to a(n) 18 : next time they met, there would be no"ifs" or "whens"; they would 19 talk about what they had 20 ! | ||||
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