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2021-2022衡中同卷语文第4题答案

33. What can be learned from Dengs study?

A. Researchers failed to rid hiv virus completely from thepatient

B CRISPR-Cas 9 has been used on different Hiv patients.

C. Cells with genetic mutation can resist HIV infection

D Scientists deleted CCR5 from stem cells of the patient.

34. What can we know about gene-editing technology

A. It is a mature technolo

B. It is supported by the government.

C. It helps cure blood-related diseases efficiently.

D. It continues to perform well in clinical tests