A survey of the opinions of the students _______ that two hours of physical exercise a day _______ acceptable in our campus.
A：shows; are
B：shows; is
C：show; is
D：show; are
—Don't listen to music in class again, Mike. —______.
8个0.01是____，0.23里面有____个0.001，3个____是0.3．
⑴x＋46=57
⑵x÷18=90
x＋46－46=57○□
x÷18×18=90○□
