问题
ew years, the coal workers theirlungs X-rayed to ensure their health.
A:as adifficult subjectas
B:a subject the same difficult as
C:as difficult a subjectas
D:had had
B:a subject the same difficult as
C:as difficult a subjectas
D:had had
正确答案是：
同类题型
Have you understood what he really means—___________.
Susan is taller than ______________ in her class.
What did your parents think about your decision?— They always let me do _______ I think I should.
d has made great progressrecently.–- _________, and ________.
We have a high regard for Mr. Smith because he always tries to _____________his principles.