【正文】 ing Christmas, the virus that had killed the woman would go on to kill nearly 100,000 people living in and around Londonalmost a third of those who did not flee.In The Great Plague(瘟疫）:The Story of London39。s identity. Systems are being so advanced that a wanted criminal can instantly be picked out of a crowd of thousands of people. All that39。s oxygen. Tiny creatures released oxygen as a waste product , filling the atmosphere with it . After that , the level of oxyge in the Earth39。如需改動(dòng)，用橡皮擦干凈后，再選涂其他答案標(biāo)號(hào)。第一部分 閱讀理解(共兩節(jié)，滿分50分)第一節(jié) (共15小題；，)閱讀下列短文，從每題所給的A、B、C和D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。 Mystery 3:What caused the Cambrian(寒武紀(jì)）Explosion?The Cambrian Explosion refers to the explosion of plex life forms that occurred on Earth about 540 million years ago. Before then, life had consisted mostly of microbes. But at the beginning of the Cambrian period plex creatures began developing at a rate never seen before. Suddenly,life forms had brains, eyes, and bones. Most living creatures today can trace their blood back to the Cambrian period.Mystery 4: Will we be able to predict earthquakes?We still haven39。s face.There are numerous concerns about the use of facial recognition. Primarily, the concern is that it threatens privacy. The installation of more and more cameras in public and private places is now part of everyday life. This means people can be observed and recognized wherever they go. Cameras may make public spaces safer, but keeping lawabiding(守法的) citizens under constant watch is disturbing to many.In the age of the coronavirus and the widespread wearing of masks, facial recognition systems are having some difficulty. A mask covers many of the facial data points used by recognition software to confirm a person39。 city officials tried their best to fight the crisis with all the legal tools。t perfect to just add an extra day every four years.A day, of course, is measured by the amount of time it takes the Earth to plete one full rotation(旋轉(zhuǎn)) on its axis(軸). A year is the number of days it takes the Earth to orbit the Sun, and most people assume the number is 365. However, the Earth actually takes just under 365 and a quarter days to plete one full revolution around the Sun.So, every four years we get an extra day, which falls on 29th February. However, as mentioned earlier, it is in fact just under a quarter of a day. So, by rounding it up, we put the calendar out of sync again which means that after a while we have too many days.That imbalance has to be readdressed. Otherwise after 400 years we39。Exploring work possibilities is quite an emotional challenge for people The desire to simplify the process by focusing on one attractive option,instead of keeping your eyes open for even more possibilities, can be very ,we39。ll pay for her food , one of them told the_________ 28__________ security guard. She would not be ________29__________.Drying her wet _______30________, the woman repeated, Thank you, thank you. She wasn39。t smell good.第三節(jié)Paragraph 1:The night passed away,and the morning dawned,and yet no news ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Paragraph 2:About seven in the morning,villagers made arrangements for a final ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________11原創(chuàng)精品資源學(xué)科網(wǎng)獨(dú)家享有版權(quán)，侵權(quán)必