问题

’t know this years ago ,butrecent science ____that inharmonic marital life like quarrels or fights harms one’ heart.

A:showed
B:is showing
C:has shown
D:shows

正确答案是：

同类题型

The London 2012 Olympic Games us a chance to enjoy the most wonderful sports events at home.

Would you like to ________ the performance of newlydeveloped energysaving device?-Sorry, but I am not in the position to ________.[ ]

对下列相关词语的解说，不正确的一项是

Let’s _________ some chicken. —Great! I like chicken.

o my,I’m unable to accept your kind invitation.