With sufficient scientific information a manned trip to Mars should be _____.
#20853
A
obtainable
B
potential
C
considerable
D
feasible
推荐题目
 _______ on the fact, the report should be reliable.
#18806
A
Basing
B
To be base
C
Based
D
To base
--What’s your opioion ?  ----My opinions are ___.
#20555
A
the same to him
B
similar to him
C
the same as you
D
similar to his