In 1831, Faraday discovered that electricity moves through a wire ________ a magnet（磁铁） is moved near the wire.
| A．where | B．so | C．when | D．but |
30．When he came back, he found the bag he had________over the seat was gone.
| A．left to hang | B．left hanging | C．to leave hung | D．to leave hanging |
29．What has been studied suggest that a short nap in the afternoon_______you refreshed for the next four or five hours.
| A．will leave | B．leaves | C．must leave | D．should leave |
28．—How about setting up an out-of-class club to share our interests and hobbies?
—Great! That’s exactly what I_________.
| A．was thinking | B．think | C．had thought | D．will think |
27．Soccer is played on a large rectangular field by________eleven players on each team.
| A．No fewer than | B．no less than | C．not fewer than | D．not less than |
26．There is a remarkable difference between the short poems that were written in English around the year 1500and________written around 1600.
| A．that | B．one | C．those | D．Ones |