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Why do researchers doubt that the new material will have a broad range of applications、

发布时间:2024-07-09

A.Because there are no enough spiders to produce silk.

B.Because it is too expensive to produce the material massively.

C.Because the unsteady state of the material makes it hard to produce.

D.Because the technology to produce the material is not finished yet.

试卷相关题目

  • 1Researchers discovered that the capture silk produced by orb spiders is weird because ________.

    A.it could be stretched to many times its original length

    B.it remains taut, even when the thread contracts or compresses

    C.it is the toughest spider silk ever found

    D.it is produced by an endangered species

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  • 2Which would the breakthrough in creating a new material lead to、

    A.People’s interest in small animals.

    B.Increased awareness of environmental protection.

    C.New understanding of spider silk.

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  • 3Scientists created a hybrid material similar to spider silk after ________.

    A.studying a previously unknown property of spider silk

    B.cooperating with foreign chemists and biologists

    C.introducing new advanced equipment

    D.discovering new species of spider

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  • 4Which of the following is NOT true about spider silk、

    A.Scientists spent decades studying spider silk.

    B.Kevlar is the toughest spider silk on earth.

    C.Some spider silk fibers are much stronger than man-made materials.

    D.Spider silk is an amazing organic material.

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  • 5The two experiments mentioned in the text reveal ______.

    A.how to follow others’ advice

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    C.what causes people to seek advice

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  • 6Which function cannot be achieved by the new system created by MIT、

    A.It can send out short wave radio signals.

    B.It has receivers to detect reflections of radio waves.

    C.It can detect people’s real time movement.

    D.It improves people’s health level and cures diseases.

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  • 7What is the distinction between the new device and the traditional one、

    A.The new device uses the short wavelength radio signals.

    B.The traditional device achieves higher accuracy.

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  • 8The new technology can be applied potentially in the following fields EXCEPT ___________.

    A.health care

    B.smart houses

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  • 9According to Adib, the first device they invented could only ___________.

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    B.capture people’s facial expressions precisely

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  • 10Compared with RF-system, Wi-Fi has ____________.

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