聽(tīng)寫填空,只寫填空內(nèi)容,不抄全文,5-10句,不用寫標(biāo)號(hào),注意標(biāo)點(diǎn),口語(yǔ)中因結(jié)巴等問(wèn)題造成的重復(fù)單詞只寫一遍~

Calestous Juma: Some of the best engineers in the world coming together thought that solving environmental problems is the greatest challenge that faces the engineering community.

You're listening to Calestous Juma, professor of the practice of international development at Harvard University. In a meeting headed by the U.S. National Academy of Engineering, Juma and other scientists identified what they call the "Grand Challenges for Engineering in the 21st Century."

Calestous Juma: [---1---]

[---2---] And it's not just for food…

Calestous Juma: … [---3,4---]

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Calestous Juma: Infrastructure as a whole which is basically the ability to move goods, ideas, and services. [---6----]

That was Harvard Calestous Juma and I'm Deborah Byrd for ES, a clear voice for science.
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I think one of the most exciting developments is the area of drought-tolerant crops as we look into the future, and large parts of the world that are not able to grow food at the moment. Juma said that plants, such as corn, are being developed with genetic modification to resist drought, not only in Africa, but elsewhere around the world. But also being able to do revegetation in areas that previously didn't hold any vegetation. So we are looking into a future where water may be a serious problem. Another engineering challenge for the world is the infrastructure, which Juma said could benefit from stronger, lighter and more durable materials made with nanotechnology. This is one of the most critical problems facing the developing world.