CCS是表示()船规的符号。
A.法国
B.中国
C.德国
参考答案:B
The one concern for parents and students is ______ if the student pursues their university education in a foreign country, the student will not have the opportunity to establish social contacts in China.
A.what
B.that
C.whether
D./
核医学早期显像的直线扫描机诞生于1951年,发明者是()
A.Anger
B.Fermi
C.Yalow
D.DavidKohl
E.Cassen