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【多选题】
队列研究中对照人群的选择一般有哪几种A.
内对照
B.
自身前后对照
C.
特设对照
D.
总人口对照
E.
多重对照
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】What is the relationship (关系) between Mr. Rance and John?
A.
They are boss and secretary.
B.
They are teacher and student.
C.
They are friends.
【多选题】下图是某建筑物定位测量示意图。该拟建建筑物一角点P的设计坐标为：P（X=560.500m，Y=820.500m），控制点B坐标为B（X=520.480m，Y=760。850m），直线AB的坐标方位角为α AB ＝126°45′30″。现拟用极坐标法测设P点。 关于本案例测设P点的说法，（）是正确的。
A.
本次测量采用的是极坐标法
B.
采用极坐标法测设地面点位，需要水平角β和水平距离D
C.
α BP ＝56°08′30″
D.
水平角β=109°23′00″
E.
水平距离D BP =59.650m
【单选题】Whom did Mr. Black buy presents for?
A.
His boss.
B.
The son of his boss.
C.
Mr.Black's wife.
【单选题】Mr. Tiger insisted that he _______ the money back to his boss but his boss said that he didn’t receive it.
A.
should pay
B.
had paid
C.
pay
D.
would pay
【简答题】The boss insisted that Mr. Copper (give) ______ up his experiment at once.
【单选题】We are at your service. Don’t ________ to turn to us if you have any further problems.
A.
beg
B.
hesitate
C.
desire
D.
seek
【单选题】Our boss, Mr. Thompson, ______ a raise in salary for ages, but nothing has happened yet.
A.
was promising
B.
has been promising
C.
promised
D.
has promised
【简答题】As teachers we should concern ourselves with what is said, not what we think ________. A) ought to be said B) must say C) have to be said D) need to say
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