Scientis say that the Mars-500 test will take about 520 days

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Scientis say that the Mars-500 test will take about 520 days______they
(1)-Scientis say that the Mars-500 test will take about 520 days______they perform the task during the real mission
-Good luck.I hope it goes well.
A.after B.before C.since D.as
(2)-I can't believe that______a little pet can eat______much food
-Yes,it's so amazing.
A.such;such B.so;so C.such;so D.so;such
(3)-Facing the global financial crisis,how do you deal with your money?
-___________________________.
A.Don't put all your eggs in one basket B.Many hands make light work.
C.Every dog has its day D.It's better to be safe than sorry
(4)-I made a lot of mistakes in the Maths exam.I'm afraid I didn't pass it.
-_________It can't be that bad.
A.Be careful B.Never mind C.Don't mention it D.Cheer up

1.B 在……之前.
2.C such + a/an +adj.+n =so+ adj.+a/an +n.
so many /so much /so little/ so few.
表示很多,很少时,只能用so 来修饰.
3.A.
4.D 振作起来.

Scientis say that the Mars-500 test will take about 520 days The Mars-500 test will take about 520 days.___ I hope it goe The mars-500 test will take about 520 Scientists say that the Mars-500 days_______ How____You say that you really understand the whole test if The students are going to take the test in two days' time.意思 take the test later take the test造句 The gravity on mars is only about three-eighths of that on It is said that the gravity on Mars is only about _______of lt's said that the gravity on Mars is only about The trip will take six days.翻译成中文