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【单选题】
羊的乳隅齿更换为永久齿,此时全部门齿已更换整齐,称为“”此时羊的年龄约为( )A.
4岁~4.5岁
B.
3岁~3.5岁
C.
5岁~5.5岁
D.
2 岁~2.5岁
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【简答题】vi. 被撕裂,裂开_____
【单选题】There three new films in the cinema next month. [ ]
A.
are going to be
B.
is going to be
C.
are
D.
is
【简答题】砂土的抗剪强度线是一条通过坐标原点 （直线、斜线）
【单选题】In fact he knows this place very well, for he ________ there three times.
A.
has been
B.
has been to
C.
has gone
D.
has gone to
【单选题】I know Beijing very well since I ________ there three times.
A.
have been
B.
went
C.
have gone
【单选题】—Have you ever been to Singapore? —Yes, I ________ there three times in 2009 alone.
A.
have been
B.
have gone
C.
went
D.
had gone
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