Rh血型抗体是
A. IgA
B. IgD
C. IgG
D. IgE
E. IgM
I was unaware of the critical points involved in this issue, so my choice was quite
A. arbitrary
B. rational
C. melancholy
D. unreasonable
The______ photograph is wonderful, which arouses great interests among the students.
A. aerial
B. aerospace
C. adverse
D. survival
By tuning this knob to the right you can______ the sound from this radio.
A. amplify
B. enhance
C. magnify
D. retard
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