They" in paragraph 4 refers to __________.,,,,==researchers|results|chimpanzees|humans">
3
which" in paragraph 4 refers to _______.,,,,factories|company|==invention|range">
19
practical" in paragraph 3 is closest in meaning to _______.,,,,accurate|traditional|sharp|==useful">
32
critical" in paragraph 3 is closest in meaning to __________.,,,,agreeable|==disapproving|unequal|encouraging">
34
discord” in paragraph 1 is closest in meaning to __________.,,,,==disagreement|status|understanding|disloyalty">
36
- Peter: “__________,”,,,,==About five kilometres|A bit too old|Not too expensive|Five hours ago">
39
- David: “_________. It gives gap-year takers a lot of valuable experiences.”,,,,I agree with you|==I don't quite agree|It's right|My pleasure">
50