【单选题】
阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。
It is tiny, only about a quarter of an inch square, and quite flat. Under a microscope, it resembles a stylized Navaho rug or the aerial view of a railroad{{U}} (51) {{/U}}yarD、Like the{{U}} (52) {{/U}}of sand on a beach, it is made mostly of silicon,{{U}} (53) {{/U}}oxygen, the most abundant element on the surface of the earth.
Yet this inert fleck (小片), still unfamiliar to the{{U}} (54) {{/U}}majority ofAmericans, has astonishing power. It is cheap to{{U}} (55) {{/U}}produce, fast, infinitely versatile and convenient.
The miracle chip represents a quantum(重大的){{U}} (56) {{/U}}in the technology of mankind, a development that{{U}} (57) {{/U}}the past few years has acquired the force and significance associated with the development of hand tools or the discovery of the steam engine. Just as the Industrial Revolution{{U}} (58) {{/U}}an immense{{U}} (59) {{/U}}of tasks from men’s{{U}} (60) {{/U}}and enormously expanded productivity,{{U}} (61) {{/U}}the microcomputer is rapidly assuming huge burdens of drudgery from the human brain and{{U}} (62) {{/U}}expanding the mind’s capacities{{U}} (63) {{/U}}that man has only begun to grasp.{{U}} (64) {{/U}}the chip amazing feats of{{U}} (65) {{/U}}become possible in everything from automobile engines to university laboratories and hospitals, from farms to banks and corporate offices, from outerspace to a baby’s nursery.
B．otherwise
C．at least
D．inversely
网考网参考答案：A
网考网解析：
此题属于语篇衔接题。thereby意为“因此”，较正式，如：We became a citizen，thereby gaining the right to vote. 根据原句内容，由于计算机承担了大量艰苦的脑力劳动，这样就有助于我们拓展大脑的能力，二者存在一种因果关系，故选项A thereby正确。其他选项：B otherwise表转折；C at least(至少)；D inversely(相反的)。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>
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