问题
选择题
It is believed that forest bathing ______ strengthen the immune system.
A.should
B.must
C.need
D.can
答案
答案:D
考查情态动词。A应该;B必须;C需要;D能够,可能;句意:人们认为深林浴能加强免疫系统。
It is believed that forest bathing ______ strengthen the immune system.
A.should
B.must
C.need
D.can
答案:D
考查情态动词。A应该;B必须;C需要;D能够,可能;句意:人们认为深林浴能加强免疫系统。