把印有英文字母“b”的载玻片放在显微镜下观察,看到的图象是英文字母( )
A:b
B:q
C:d
D:p
I regret you I can’t help you.
在城市,排在第一位的癌症是____;在农村,排在第一位的癌症是____;在青少年和儿童中,排在第一位的恶性肿瘤是____。
– Why don't you go out to have fun?
– You see, we are studying for the tests these days. And we are ______ busy_____ we can't go out.