With the population explosion, scientists will have to ______ new methods of increasing the world

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• With the population explosion, scientists will have to ______ new methods of increasing the world
• With the population explosion, scientists will have to ______ new methods of increasing the worldA. lead to B. stick to C. carry out D. come up with单选
• 1.It is not a serious accident; the car needs only some _____ repairs.A.major B.minor C.secondary D.primary2..With the population explosion,scientists will have to ____ new methods of increasing the world’s food supply.A.lead to B.carry out C.come up with D.stick to 3.One of his many faults is that he never ____ anything very long.A.decides on B.sticks to C.goes over D.makes sure4.The airplane arrived one hour behind _____.A.timetable B.plan C.date D.
• 1.It is not a serious accident; the car needs only some _____ repairs.A.major B.minor C.secondary D.primary2..With the population explosion,scientists will have to ____ new methods of increasing the world’s food supply.A.lead to B.carry out C.come up with D.stick to 3.One of his many faults is that he never ____ anything very long.A.decides on B.sticks to C.goes over D.makes sure4.The airplane arrived one hour behind _____.A.timetable B.plan C.date D.
• 英语翻译If the population of the earth goes on increasing at its present rate,there will eventually not be enough resources left to sustain life on the planet.By the middle of the 21st century,if present trends continue,we will have used up all the oil that drives our cars,for example.Even if scientists develop new ways of feeding the human race,the crowded conditions on earth will make it necessary for lus to look for open space somewhere else.But none o
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• 23分别乘以一个自然数,积分别是质数.合数.奇数.偶数,能被3整除的数