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更多“Did Columbus fulfill his plan of sailing west to reach the Indies ？Why？ 2. How long did it take to f…”相关的问题
A、We shall stay at the Grand Canyon for one day．
B、Shall we stay at the Grand Canyon for one day？
C、To stay at the Grand Canyon for one day is too short．
D、To stay at the Grand Canyon for one day is enough．
A、glycolysis
B、gluconeogenesis
C、glycogen degradation
D、pentose phosphate pathway
| 阅读理解。 |
| Early in the 16th century men were trying to reach Asia by travelling west from Europe. In order to find Asia they had to find a way past South Africa. The man who finally found the way from the Atlantic Ocean to the Pacific was Ferdinand Magellan. Magellan sailed from Seville in August 1519 with five ships and about 280 men. Fourteen months later, after spending the severe (凌冽的) winter on the coast of Patagonia, he discovered the channel (海峡) which is now called Magellan Straits. In November 1520, after many months of dangers from rocks and storms, the three remaining ships entered the ocean on the other side of South America. They then continued, hoping to reach Asia. But they didn't see any land until they reached the islands off the coast of Asia. Before they arrived at these islands, later known as Philippines, men were dying of starvation. While they were in the Philippines., Magellan was killed in battle. The remaining officers then had to get back to Spain. They decided to sail around Africa. After many difficulties, one ship with eighteen men sailed into Seville after leaving. They were all that remained of Magellan's expedition (探险队). |
| 1. Magellan Straits were discovered by Magellan ______. |
| A. in August 1519 B. in October 1520 C. in November 1520 D. in December 1520 |
| 2. The number of the ships lost on the whole expedition was ______. |
| A. two B. three C. four D. five |
| 3. Which of the following is NOT mentioned in the text？ |
| A. Dangers from rocks and storms B. Lack of fresh food and water C. Severe winter in Patagonia D. The death of Magellan |
| This is _____ each year a great number of people from all over the world try to immigrate to California. |
[ ] |
| A. when B. what C. why D. that |
A、patiently
B、absolutely
C、completely
D、evidently
A、higher; higher
B、higher; lower
C、lower; higher
D、lower; lower
B．人类基因组中重复序列的比例高于单一序列
C．重复序列按照在染色体上的分布可以分为串联重复序列和散在重复序列
D．蛋白质编码基因也有多拷贝的重复现象
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