1. The main idea of this passage is
[A] studies on the cause of cancer
[B] controversial view-points in the cause of cancer
[C] the relationship between electricity and cancer.
[D] different ideas about the effect of electricity on caner.
2. The view-point of the EPA is
[A] there is casual link between electricity and cancer.
[B] electricity really affects cancer.
[C] controversial.
[D] low frequency electromagnetic field is a possible cause of cancer
3. Why did the Pentagon and Whit House object to the release of the report? Because
[A] it may stir a great deal of debate among the Bush Administration.
[B] every unit of the modern military has depended on the heavy use of some kind of electronicequipment.
[C] the Pentagon’s concern was understandable.
[D] they had different arguments.
4. It can be inferred from physical phenomenon
[A] the force of the electromagnetic field is too weak to be harmful.
[B] the force of the electromagnetic field is weaker than the electric field that the cells generate.
[C] electromagnetic field may affect health.
[D] only more powerful radiation can knock electron out of human body.
5. What do you think ordinary citizens may do after reading the different arguments?
[A] They are indifferent. [B] They are worried very much.
[C] The may exercise prudent avoidance. [D] They are shocked.