Listen to a short passage and choose the best answer to each question you hear.[音频]Question 1:[音频] A: 1:3. B: 3:1. C: 1:10. D: 10:1.

​下列对枚举类型的使用的代码中错误的是（）。‎ A: enum {no, yes, none}answer; if (answer == yes) { printf("Yes\n"); } B: enum response{no = -1, yes = 1, none = 0}; enum response answer; C: answer = yes; printf("%d", answer); D: answer = "yes"; printf("%s", answer);

Listen to the short conversation and answer the question: What is the time?[音频]

下列对枚举类型的使用的代码中错误的是（）。 A: enum {no, yes, none}answer; if (answer == yes) { printf("Yes "); } B: enum response{no = -1, yes = 1, none = 0}; enum response answer; C: answer = yes; printf("%d", answer); D: answer = "yes"; printf("%s", answer);

I. Listen to two conversations and choose the best answer for each question. [音频]

The questions are difficult. I'm not likely to be able to answer them. 1 the questions are, 2 I am able to answer them.

Compute H−− with respect to point A where H−−=[I][ω] and [ω]T=[ωxωyωz]. Please answer using m, L, ϕ, and ω. Note that m is a point mass.H=i^:______ j^:______ k^:______

Watch conversation 1 and answer the question.1.What is Read all about it?

1. As for styles, the answer may be Chinese Cheongsam [tʃɒŋˈsæm]; Chinese_______________, also called “Zhongshan Zhuang” in Chinese.

Skim the text and answer the following questions. 1) What type of writing is the text?