Jennifer couldn't ________ her tears when she saw the sick children at a new blood cancer center in Virginia.
A. keep back
B. keep out
C. keep away
D. keep up
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After 10 years of full-time training, she has finally ________ as a professional dancer.
A. made it
B. make it
C. made
D. make
一场突如其来的瘟疫在那个地区爆发了,至少导致了500人的死亡。(plague)
那将会使父母与孩子之间的关系紧张。(strain)
5000多年以前,神农氏就编撰的 ____, 提到了一种叫做麻黄的植物可以治疗心脏病,并发现了茶叶独特的解毒功效。