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【单选题】
不同性质的有机染料可对细胞中不同成分进行选择性染色,下列哪种结果有误? ( )A.
碘液可使口腔上皮细胞的细胞质和细胞核呈深浅不同的棕黄色
B.
吉姆萨染液可以使细胞或染色体呈紫红色或橘红色。
C.
甲基绿可使RNA分子呈蓝绿色。
D.
派洛宁可使分子呈红色。
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【单选题】患者，女性，62岁．有高血压病史14年，伴变异性心绞痛，最近频繁发生阵发性室上性心动过速，宜选用
A.
维拉帕米
B.
尼莫地平
C.
硝苯地平
D.
普萘洛尔
E.
美西律
【单选题】Th author's attitude towards women taking a career is _______.
A.
criitical.
B.
positive.
C.
neutral.
D.
realistic.
【简答题】当全部乘客都向出口处 (exit) 走去时,他却独自留 在座位上,好像不 愿意离开这架飞机似的。
【单选题】Tom sacrificed his personal life ________ he could get ahead in his career.
A.
in case
B.
as if
C.
so that
D.
only if
【单选题】The _______ in David's character has hindered him from advancement in his career.
A.
weakness
B.
shortcoming
C.
demerit
D.
defect
【单选题】John's success in his career will be a great ______ to his aged parents.
A.
satisfaction
B.
concentration
C.
attraction
D.
solution
【单选题】He abandoned a career that ______ to his becoming one of the most influential people in the world.
A.
could have led
B.
will lead
C.
should have led
D.
must lead
【简答题】为何说益母草为妇科经产要药?
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