Besides wildlife on land, there are species living in the oceans _______ we still know little.
| A．about which | B．in which | C．for which | D．with which |
Eating too much fat can______ heart disease and cause high blood pressure.
| A．result from | B．contribute to | C．come across | D．focus on |
Teenagers are damaging their health because they often ______ themselves to so many electric products.
| A．equip | B．absorb | C．devote | D．expose |
Born into a family with three brothers, David was to value the sense of
sharing.
| A．brought up | B．built up | C．picked out | D．put forward |
—Shall I inform him of the change of the schedule right now?
—I am afraid you , in case he comes late for the meeting.
| A．will | B．must | C．may | D．can |
Tsinghua University, in 1911, is home to a great number of outstanding figures.
| A．found | B．founding | C．founded | D．to be founded |