1. The scientists plan to ______ the collected biological data further to find out the exact cause of the disease.
(A) investigate
(B) participate
(C) refer
(D) diminish

47.(A)Music helps decrease worries in the elderly, new mothers, and children, too. (B) And in modern times, shopping malls play music to attract customers and keep them in the store. (C) This can be used to help children and teenagers with attention problems in several ways. (D) Despite these differences, however, there are some common responses to music. (E) On the other hand, parents of teenagers know that certain kinds of music, particularly at high volumes, can cause stress.

48.(A)Music helps decrease worries in the elderly, new mothers, and children, too. (B) And in modern times, shopping malls play music to attract customers and keep them in the store. (C) This can be used to help children and teenagers with attention problems in several ways. (D) Despite these differences, however, there are some common responses to music. (E) On the other hand, parents of teenagers know that certain kinds of music, particularly at high volumes, can cause stress.

49.(A)Music helps decrease worries in the elderly, new mothers, and children, too. (B) And in modern times, shopping malls play music to attract customers and keep them in the store. (C) This can be used to help children and teenagers with attention problems in several ways. (D) Despite these differences, however, there are some common responses to music. (E) On the other hand, parents of teenagers know that certain kinds of music, particularly at high volumes, can cause stress.

50.(A)Music helps decrease worries in the elderly, new mothers, and children, too. (B) And in modern times, shopping malls play music to attract customers and keep them in the store. (C) This can be used to help children and teenagers with attention problems in several ways. (D) Despite these differences, however, there are some common responses to music. (E) On the other hand, parents of teenagers know that certain kinds of music, particularly at high volumes, can cause stress.

2. The editorial board wants the author to ______ the help provided by the research assistants in the revised version of the article. (A) minimize (B) acknowledge (C) contradict (D) obfuscate

3. Video game developers are looking for the next ______ market, where young people might start buying their products. (A) outdated (B) existing (C) familiar (D) emerging

4. Make sure to ______ all available resources at the library for your further study and research. (A) discuss (B) achieve (C) utilize (D) expand

5. Many environmental scientists actively ______ for stricter laws on industrial waste disposal due to the drastic climate change. (A) reinforce (B) advocate (C) mitigate (D) contradict

6. Responsible scientists should repeat the same experiment several times to ______ the accuracy of their initial results. (A) prioritize (B) summarize (C) validate (D) expand

7. Lab scientists use graphs to ______ how the data changed over time. (A) illustrate (B) achieve (C) require (D) label