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1、 It's good ____ us to use renewable energy.A、for B、of C、to D、with
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2、 ____ to the Moon is a great achievement for humans.A、Travel B、Travels C、Traveling D、Traveled
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3、 The Earth's climate ____ due to human activities.A、change B、changes C、changed D、is changing
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4、 We should ____ the importance of protecting the Earth to others.A、spread B、hide C、forget D、ignore
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5、 The teacher ____ us about the Moon's surface yesterday.A、tell B、tells C、told D、telling
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6、 ____ the Earth and its neighbors can expand our scientific knowledge.A、Study B、Studies C、Studying D、Studied
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7、 —____ is the center of the solar system? —The Sun.A、What B、Which C、Who D、Whose
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8、 Let's ____ a project to study the Earth and its neighbors.A、start B、starts C、starting D、started
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9、 Using renewable energy ____ us protect the environment.A、help B、helps C、is helping D、helped
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10、 —Can we see stars during the day? —No, we ____ because the Sun is too bright.A、can B、can't C、must D、mustn't
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11、 It's interesting ____ about the solar system in science class.A、learn B、to learn C、learning D、learned
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12、 We must ____ our natural resources.A、save B、saves C、saved D、saving
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13、 —____ do we need to protect the Earth? —Because it's our only home.A、What B、Why C、How D、When
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14、 They (plan) to visit a science museum to learn about the universe.
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15、 When talking about the Earth, we should speak (careful) to show our respect.
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16、 (use) renewable energy is good for the environment.
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17、 This documentary (introduce) the beauty of the Earth and its neighbors.
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18、 Let's (save) water by taking shorter showers.
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19、 We need (reduce) waste in our daily life.
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20、 Studying planets (make) us know more about the universe.