17. The sun and wind are two major sources of _____ energy that many countries around the world have
been trying to develop.
(A) recycling (B) reusable (C) renewable (D) returnable
24. On the way back from the US, we only had a 2-hour _____ in Tokyo and couldn’t leave the airport to
visit the city.
(A) transport (B) translation (C) transform (D) transit
30. Our company often holds _____ because we have employees working in different parts of the country.
(A) conferences (B) audio conferences (C) videoconferences (D) videos
42. Jobs in public enterprises are more stable; _____, more and more young people choose to work in such
companies when they finish college education.
(A) as a result (B) as an excuse (C) as usual (D) as indicated