Teachers should allow their students to study ________ from the start, and it is bound to result in their ability to deal with problems on their own.
| A．theoretically | B．socially | C．optionally | D．autonomously |
I have many friends, ________ some are businessmen.
| A．of whom | B．from which | C．who of | D．of them |
. Only in a few countries in the world _______ a reasonable standard of living.
| A．enjoyed people have | B．people have enjoyed |
| C．people can enjoy | D．can people enjoy |
. They came together with the same ______ about the earth’s environment and the same dream of co-existing peacefully.
| A．attention | B．concern | C．tradition | D．business |
Most of the young men looking for adventure in the rainforest had difficulty ___ to the terribly hot weather.
| A．adopting | B．sticking | C．adjusting | D．devoting |
Chinese news reported today that a woman in Hongbai had been rescued after ____ in a tunnel for nine days.
| A．trapping | B．being trapped |
| C．having trapped | D．to be trapped |