What can be said about the experiments at Rocky Mountain Arsenal?
A) They have no practical value in earthquake prevention.
B) They may have practical value in earthquake prevention.
C) They are certain to have practical value in earthquake prevention.
D) The article does not say anything about their practical value in earthquake prevention.
第1题:
A.Nice and cool
B.The weather forecast says it’s fine
C.About 18 degrees
D. Sure, it’s sunny
第2题:
—— ______they ______an English class?
——N0.they aren’t.
A.Are;having
B.Are;have
C.D0;have
D.Can;have
第3题:
You look() What()you()?
Atire;did;do
Btiring;have;done
Ctired;do;do
Dtired;have;been doing
第4题:
A:What’s the extent of the delay? B: ( )
A.BeiJing
B.apron
C.About 2 hours
D.bullet
第5题:
第6题:
语义网络的基本语义关系包括()。
A.实例关系(ISA)
B.分类关系(AKO)
C.成员关系(A-Member-of)
D.属性关系(Have或者Can)