McGrady plays basketball so well__________. 查看材料
A. that his teammates cannot help admiring him
B. that he is often yelled at by the coach
C. who can play basketball so well
D. because he had been injured
E. if Houston hopes to win
F. since he returned
单位体积溶液内所含的放射性活度为()
A. 放射性浓度
B. 比活度
C. 活度
D. 吸收剂量
Which of the following is an advantage the private postal services had over the government postal system？ 查看材料
A. Delivering mail more cheaply.
B. Delivering mail faster.
C. Delivering mail to rural areas.
Delivering more mails.
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