2. 外语
  3. Humans are forever forgetting that they can’t control nature. Exactly twenty years ago, the Time magazine cover story announced【

Humans are forever forgetting that they can’t control nature. Exactly twenty years ago, the Time magazine cover story announced【

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问题     Humans are forever forgetting that they can’t control nature.
Exactly twenty years ago, the Time magazine cover story announced【M1】______
that "scientists are on the verge of being able to predict the time, place
and even the size of earthquakes". The people of quake-ruined Kobe
(神户)learned last week how wrong that assertion was. All of the【M2】______
methods raised two decades ago have succeeded. Even now, scientists
have yet to discover a uniform warning signal that precedes all quakes,
let alone any sign would tell whether the coming quake is mild or a【M3】______
killer. Earthquake formation can be triggered by many factors, says
Hiroo Kanamori, a seismologist at the California Institute of Technology.
    So, finding one all-purpose warning sign is impossible.
One reason: Quakes start deeply in the earth, so scientists can’t study【M4】______
them directly. If a quake precursor were found, it would still be
impossible to warn humans at advance of all dangerous quakes.【M5】______
Places like Japan and California are full with hundreds, if not【M6】______
thousands, of minor faults(断层). It is impossible to place
monitoring instruments on all of them And these inconspicuous sites
can be just as deadly their better-known cousins like the San Andreas.【M7】______
Both the Kobe and the 1994 Northridge quakes occurred in small【M8】______
faults. Prediction would be less important if scientist could easily build
structures to withstand tremors. While seismic engineering has been【M9】______
improved dramatically in the passed 10 to 15 years, every new quake【M10】______
reveals unexpected weaknesses in "quake-resistant" structures, says
Terry Tullis, a geophysicist at Brown University.
【M3】
选项
答案∧would→that
解析 语法错误。sign为先行词，其后是定语从句，从句缺少主语，因此需加that。
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