A. while
B. which
C. when
D. so
第1题:
A. many - to - one
B. one - to - one
C. one - to - many
D. many - to - many
第2题:
________ the vessel have no safety radiotelegraphy certificate at the time of her delivery,she ________ be held to be unseaworthy.
A.If/may
B.Will/shall
C.Should/would
D.Would/should
第3题:
第4题:
Being a good leader,one ______ to think more of others. A. must B. may C. ought D. should
第5题:
______ it rain tomorrow moring, the loading ______.
A.Should / will be postponed
B.If / shall be postponed
C.Should / would be postponed
D.If / has to be postponed
第6题: