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【单选题】
关于地球内部结构的叙述错误的是A.
目前（截止1986年）世界上深井记录为12000m，所以还不能用直接观察的方法来研究地球内部构造，通常用地震波的传播变化来研究。 B地震波传播速度随深度而发生变化，有些地方还发生突然变化，可见地球内部物资不是均一的，还存在许多界面。
B.
地震波传播速度随深度而发生变化，有些地方还发生突然变化，可见地球内部物资不是均一的，还存在许多界面。
C.
岩石圈包括全部地壳及上地幔的上部, 岩石圈的下界为下地幔。
D.
在深度60-400km范围内，震波速度明显下降，特别是100-150Km深度附近下降更多，一般认为这一层可能有部分熔融，具有较大的塑性或潜柔性，因此又称为软流层。
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【单选题】In some way, he _______ several of his friends in the trouble.
A.
involved
B.
made
C.
find
D.
get
【单选题】In some way, he( )several of his friends in the teouble.
A.
involves
B.
involved
C.
involve
D.
involving
【单选题】In some way, he _____several of his friends in the trouble.
A.
involved
B.
celebrated
C.
invented
【简答题】In some way, he several of his friends in the trouble.
【简答题】In some way, he _________ several of his friends in the trouble.A. involved
【简答题】加班时自己手机没电了，所以用单位电话给自己的弟弟回电话，被回来取东西的同事看见了，他向领导汇报了此事，你如何办?
【单选题】In some way ,he __several of his friends in the trouble
A.
electric
B.
cheer
C.
involves
D.
recent
【单选题】In some way, he ______________ several of his friends in the trouble.
A.
involved
B.
involving
C.
will involved
D.
will have involve
【单选题】In some way, he ( ) several of his friends in the trouble.
A.
involve
B.
involving
C.
involves
D.
involved
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