Q5. The main idea of the text is _____.
A: younger people are more susceptible to even small amounts of radiation
B: no scientific evidence has been found about the effect of cosmic radiation
C: radiation has the greatest effect on fast dividing and developing cells
D: radiation may be a greater cancer risk for adults than doctors thought
A: younger people are more susceptible to even small amounts of radiation
B: no scientific evidence has been found about the effect of cosmic radiation
C: radiation has the greatest effect on fast dividing and developing cells
D: radiation may be a greater cancer risk for adults than doctors thought
D
举一反三
- 3. Which of the following sentence is right? A: The goal is to learn their risk of thyroid cancer the extent to which radiation may increase. B: The goal is to learn the extent to which radiation may increase their risk of thyroid cancer. C: The goal may increase their risk of thyroid cancer is to learn the extent to which radiation. D: The goal is to learn the extent to radiation which may increase their risk of thyroid cancer.
- The method in which the greenhouse effect takes place is by A: gamma radiation from the earth is absorbed into the atmosphere by particulates B: beta radiation from the Sun is absorbed by water vapor C: ultraviolet radiation from the Sun is absorbed by ozone D: infrared radiation from the Earth's surface is absorbed by multiple gases in the atmosphere E: cosmic radiation from deep space is absorbed by gases in the atmosphere
- The accumulation of greenhouse gases (GHGs) causes global warming by letting sunlight into the atmosphere as _______. Then, when the earth re-radiates the heat back to space, the gases trap the energy in the form of outgoing ______. A: visible light, ultraviolet radiation B: infrared radiation, ultraviolet radiation C: ultraviolet radiation, infrared radiation D: infrared radiation, radio waves
- The light emitted by the LED is incoherent light, and its basic principle is . A: stimulated absorption B: spontaneous radiation C: stimulated radiation D: spontaneous radiation
- The main reason that he developed liver cancer (肝癌) is because he _____ high levels of radiation (辐射). (expose)
内容
- 0
61. Radiation fog is more commonly encountered in _____.
- 1
radiation
- 2
The main reason that he developed liver cancer (肝癌) is because he had been __________ to high levels of radiation (辐射). A: revealed B: damaged C: exposed D: covered
- 3
Although the evidence remains _____, he believes that radiation is bad for human health.
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3. What do experts think about the radiation?