33. According to the passage, human interferon
A. is a hormone that causes disease.
B. could be used to treat cancer.
C. is a viral disease
D. has been cured
34. In this passage, the three genetically engineered medical products are presented
A. as a process.
B. from earliest to latest.
C. in a simple list.
D. as a story.
35. In the last paragraph, the word weighed has the closest meaning with
A. had great influence
B. became a burden.
C. measured accurately.
D. considered carefully.
第二章 New Attempts to Eradicate AIDS Virus
An attempts to Eradicate AIDS Virus high-profile attempt to eradicatethe AIDS virus in a few patients continues to show promise.
But researchers wont know for a year or more whether it will work. , scientist David Ho told journalists here Wednesday for the Fourth Conference in Viruses and infections.
This is a study thats in progress, says Ho, head of the Aaron Diamond AIDS Research Center, New York.
The study involves 20 people who started combinations of anti-HIV drugs very early in the course of the disease, within 90 days of their infections. Theyve been treated for up to 18 months. Four others have dropped out because of side effects or problems complying with the exacting drug system.
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