海水淹溺者应给予下列哪项乙醇湿化后吸氧（）
A.20%～30%
B.30%～40%
C.40%～50%
D.40%～60%
E.30%～50%
参考答案：C
—The girl likes singing.
—Yes, she is often heard ______in her room. [ ]
A. sing
B. to sing
C. singing
D. sings
_____ the high price, demand for these cars is very high. [ ]
A. Because of
B. In spite of
C. In case of
D. Thanks to
