What does the phrase“clam up”in Paragraph 2 probably mean?

A． become excited

B． show respect

C． refuse to talk

D． seek help

[单选题]What does the phrase “clam up” in Paragraph 2 probably mean?A．become excitedB．show respectC．refuse to talkD．seek help

[单选题]What does the phrase “clam up” in Paragraph 2 probably mean?A． become excited B. show respectC． refuse to talkD. seek help

[单选题]What does the phrase “the wake-up call”in Paragraph 3 most probably mean?A．a new diseaseB．a clear warningC．a dangerous animalD．a morning call

[单选题]What does the phrase “the wake-up call” in Paragraph 3 most probably mean?A． a new disease B. a clear warningC． a dangerous animal D. a morning call

[单选题]What does the underlined phrase “an instant hit” (Para. 3) mean?A． a fast blowB． a sudden beatC． a big strikeD． a quick success

[单选题]What does the underlined phrase “her gift” (Paragraph 2 ) refer to?A． Her words. B. Her smile.C. Her flowers.D. Her politeness.

[单选题]What does the underlined phrase “die hard” in Paragraph 1 probably mean?A． Change suddenly.B． Change significantly.C． Disappear mysteriously.D． Disappear very slowly.

[单选题]What does the underlined phrase “die hard” in Paragraph 1 probably mean? ( )A． Change suddenly.B． Change significantly.C． Disappear mysteriously.D． Disappear very slowly.

[单选题]What does the underlined phrase \"the question\" in Paragraph 1 refer to?A.

[单选题]What can we learn from the last paragraph?A． The new tax will be beneficial in the long run.B． Low-income Americans are more likely to fall ill.C． Future generations will be hooked on smoking.D． Adults will depend more on their families.