Question

[Thanh Vi]

V. Choose the one option that best completes the passage.
The sun has given us solar energy since the earth (24) _________but it wasn't. until recently that (25)______ understood how convert. the sun's energy to elec- tricity. Photovoltaic cells, abbreviated PV, convert sunlight (26)________ to elec- tricity. These cells can be so small (27) ___they power a wristwatch or calculator. Large PV system can generate enough electricity for a building and are (28) ________for power in remote areas that get enough (29)________.Solar power plants can generate enough electricity to power homes and businesses but this is new (30)_______and as of 2006, there were only fifteen (31) plants, in the U.S.
24. a. formed b. has formed c. was formed d. has been formed
25. a. invent b. invention c. inventive d. inventors
26. a. mainly b. directly c. exactly d. largely
27. a. as b. than c. that d. then
28. a. use b. to use c. using d. used
29. a. sunshine b. sunrise c. sunshade d. sunset
30. a. technical b. technology c. technician d. echnological
31. a. such c. even d. every b.so

Answer 1

[Komorebi]

24c 25d 26b 27c 28d 29a 30b