皮皮学，免费搜题
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【单选题】
小麦的芒可分为无芒、短芒和长芒3种类型,调查了产地为河北、河南、山东和山西4个省份的1418个小麦品种芒的类型,统计各省每一类型的品种数目。可采用( )分析小麦芒类型与产地是否有关。A.
U检验
B.
t检验
C.
c2检验
D.
F检验
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】Sorry, I can't solve your problems. I know _______ English
A.
few
B.
a few
C.
little
D.
a little
【简答题】左心室的入口称_____,口周围有 _____ 附着;出口称 _____ ,口周围有 _____ 附着。
【单选题】My father can play ________ violin well, but he can’t play ________ soccer.A．the; theB．the; \C．\; th
A.
My father can play ________ violin well, but he can’t play ________ soccer. A．the; the
B.
the; /
C.
/; the
D.
/; /
【单选题】May I know your name?
A.
I’m studying English.
B.
Fine, thank you.
C.
I’m a student.
D.
I’m John Smith.
【单选题】My mother can play computer games but my father _____ . [ ]
A.
isn't
B.
doesn't
C.
aren't
D.
can't
【单选题】—I haven't seen your English teacher for a week. Where is he? —Sorry, I don't know _____ .
A.
where has he been
B.
where he has been
C.
where has he gone
D.
where he has gone
【单选题】— You ought to have made an apology to your English teacher last Sunday. — Yes, I know I ____. [ ]
A.
ought to
B.
have to
C.
should have
D.
must have
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