问题

What many people wonder is ______ there is any connection between our senses and our health. [ ]
A: that
B: how
C: whether
D: why
B: how
C: whether
D: why
正确答案是:
同类题型
The use students ________of the chance to travel and see new things really _______.
The stream________during the hot summer, but it isfull of water in spring.
The shop ________ from Monday to Friday. It’s ________ at weekends.
d himself behind the door, _________ he couldhear the steps of his mother clearly.