注射机的额定最大注射量通常是用（）来标定的。
A.乙烯
B.聚苯乙烯
C.乙炔
D.丙烯
参考答案：B
3×5×7×9×1×0=______，
152+153+154+155+156+157+158=______．
I don't feel like _____ such a long trip. I'd like _____ with my mother at home. [ ]
A. making; staying
B. to make; to stay
C. making; to stay
D. to make; staying
