[单项选择]It can be inferred that France's voting to the proposed constitution might______.
A. take place ahead of the original schedule
B. accept it under the pressure of government
C. produce great effects to presidential elections
D. have little possibilities to approve it

[单项选择]According to the passage, positive ions can be produced by ______.
A. computer display screens
B. thunderstorms
C. earthquakes
D. typhoon

[单项选择]With lasers scientists can probe many physical processes, such as combustion, once beyond our ken.
A. understanding
B. responsibility
C. interpretation
D. notice

[单项选择]

Can earthquake be predicted Scientists are (1) programs to predict where and when an earthquake will occur. They hope to (2) an early warning system that can be used to (3) earth-quakes so that lives can be saved. The scientists who are (4) this work is called seismologists. The word seismologist is (5) from the Greek word seismos, meaning earthquake.
Earthquakes are the most dangerous and (6) of all natural events. They occur in many parts of the world. Giant earthquakes have been (7) in Iran, China, India, Alaska, and so on. Two of the biggest earthquakes that were ever recorded (8) in China and Alaska, which measured about 8.5 on the Richter Scale. The Richter Scale was (9) by Charles Richter in 1935, and compares the energy (10) of earthquakes. An earthquake that measures a 2 on tile scale can be felt but causes (11) damage. One that measures 4.5 on the scale can cause slight damage, and an e
A. got
B. passed
C. obtained
D. derived