[单项选择]

W: Can we leave the lab now, teacher
M. No, you must tidy the lab before you leave.

When can the student leave（　）.
A. The student can’t leave unless he has put everything back in the cupboard.
B. The student can leave after he turns off the electricity.
C. The student can leave after he has tidied the lab.

[单项选择]（）we leave now, we can’t avoid traffic
A. If   
B. Unless 
C. Even though
D. No matter

[单项选择]You can come now ______ you can meet us at the supermarket later.
[A] as [B] but [C] or

[简答题]Up to now, we have not heard anything from you about the shipment of your Contract No. 8726 against our Order No. 645. No doubt there must have been some mason for the delay in shipment and we cabled you that we were extending the L/C to the end of Nov. We feel sum we shall soon be hearing from you about this business.

[填空题]What can you learn from stamps
We can learn many things about （） from stamps.

[填空题]What can you learn from stamps We can learn many things about ______ from stamps.

[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

[单项选择]

W: Can you believe that we’ve finally found a house
M: Good for you．Tell me about the house!
W: It doesn’t look good outside. but it is lovely inside．
M: How nice! How many bedrooms does it have
W: Well，it has three bedrooms, two bathrooms，one big sitting room and a modern kitchen．
M: Then your two boys don’t need to share a room. They are happy with it
W: Yeah, they can have their own rooms. What interests me most is the small garden before the house．You know I love gardening so much．

What are the two speakers talking about （　）
A. Their new house.
B. The woman’s new house.
C. The man’s new house.