高手请进，模棱两可的英语单项选择

1.A person has over 1000 dreams in a year,is it_______?
A.crazy B.strange C.surprised D.amazing
Ans: D

2.I saw some boys________basketball yesterday afternoon.
A.play B.plays C.playing D.to play
Ans: C
A and B - Present tense. The boys play basketball.
D - He wants to play soccer.

3.When a bee has found some food,it goes back to its home.It is ________for a bee to tell the other bees where the food is and how far away it is.
A.important B.difficult C.necessary D.impossible
Ans: C. In this case, we know that a bee NEEDS help from other bees to get the food. (Necessary comes from the word Need).

4.some animals show how they feel by making sounds.It is difficult to tell that a dog is angry________it barks.
A.so that B.until C.before D.if
Ans: B - Difficult = not easy! We won't know whether it is angry until it barks! (Or we can use "unless")

1.D
2.A/c
3.C
4.C