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【单选题】
植物缺铁表现()。A.
病斑不常出现
B.
叶脉间
C.
严重时叶缘及叶尖干枯
D.
使花畸形
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】“物质的量”是国际单位制中的一个基本物理量，有关说法正确的是（ ）
A.
摩尔是7个基本物理量之一
B.
H 2 O的摩尔质量是18
C.
物质的量就在数值上等于物质的质量
D.
1mol O 3 中约含有1．806×10 24 个氧原子
【简答题】He is the very person whom I m looking for.英译汉
【单选题】Tom is very helpful. He is the very person _ you can turn in trouble. [ ]
A.
from whom
B.
to whom
C.
to that
D.
from that
【单选题】The doctor ______ she sent her friend is very famous.
A.
to whom
B.
to whose
C.
whom
D.
at whom
【单选题】听力原文：W: With whom did you go fo the Great Wall? M: My parents, my sister Mary and good friend Charile. How many people went to the Great Wall?
A.
Seven.
B.
Four.
C.
Five.
【单选题】电离度是描述弱电解质电离程度的物理量，电离度=(已电离的物质的量/原来的总物质的量)×100%。现取20 mL pH=3的CH 3 COOH溶液，加入0.2 mol·L -1 的氨水，测得溶液导电性变化如图，则加入氨水前 CH 3 COOH的电离度为 [ ]
A.
0.5%
B.
1.5%
C.
0.1%
D.
1%
【单选题】The foreign prime minister was the person______ .
A.
whom the banquet was given in honor
B.
for him the banquet was given honor
C.
whose honor the banquet was given
D.
in whose honor the banquet was given
相关题目：
【单选题】The doctor ______ she sent her friend is very famous.
A.
to whom
B.
to whose
C.
whom
D.
at whom