山药的质地特征()
A.粉性
B.松泡
C.角质
D.油润
E.黏性
参考答案:A
Allen’s new job paid twice as much as he had made ______ in the small restaurant. [ ]
A. working
B. worked
C. to work
D. when worked
用于核移植的受体细胞一般都选用[ ]
A.受精卵
B.MⅠ期卵母细胞
C.MⅡ期卵母细胞
D.红细胞