[填空题]We keep it to watch the door.

[填空题]We keep it to watch the door.

[填空题]From the story of "Night Watch" we can conclude that the young Marine was（　）

[填空题]We watch TV with them.

[单项选择]As we know, if we want to keep our health and have a strong body, our eating habits are very important in our daily life. There are times when most of us would rather eat sweets and ice cream than meat and rice. Actually, sweets and ice cream are not bad for the stomach if we eat them at the end of a meal. If we eat them before a meal, they may take away our appetite. Meanwhile, it is important for us to eat our meal at the same time each day. When we feel hungry, it shows that our bodies need food. When we feel angry or excited, we may not want to eat. When we are worried, we may not want to eat, either. A long time ago, in England, some judges used to decide whether a man was telling the truth by giving him some dry bread. If the man could not swallow the bread, it was a sign that he wasn’t telling the truth. Although this seems very strange and rather foolish, it is indeed an excellent way of finding out the truth. A man who is worrying about something has difficulty in swallowing a
A. we want to be healthy and strong
B. we want to enjoy our food
C. we want to eat more
D. we want to save time

[填空题]We must keep ourselves（）(health) so that we can study well.

[单项选择]They keep saying we’ll get the money, but the reality is that there is none left.（）
A. 他们有保留地说我们会得到钱，但实际情况是根本没钱留下来。
B. 他们再三说我们会得到钱，但实际情况是根本没钱留下来。
C. 他们再三说我们不会得到钱的，但实际情况是有许多钱留了下来。
D. 他们再三说我们不会得到钱，但在现实生活中，他们没有钱留给我们。

[填空题]
We can now watch electricity as it flows through even the tiniest circuits. By scanning the magnetic field generated as electric currents flow through objects, physicists have managed (46) . The technology will allow manufacturers to scan microchips for faults, as well as revealing microscopic defects in anything from aircraft to banknotes.
Gang Xiao and Ben Schrag at Brown University in Providence, Rhode Island, visualize the current by measuring subtle changes in the magnetic field of an object and (47)
Their sensor is adapted from an existing piece of teclmology that is used to measure large magnetic fields in computer hard drives. "We redesigned the magnetic sensor to make it capable of measuring very weak changes in magnetic fields," says Xiao.
The resulting device is capable of detecting a current as weak as 10 microamperes, even when the wire is buried deep wit