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Yuan once said he had two dreams — to “enjoy the cool under the rice crops taller than men” and that hybrid rice could be grown all over the world to help solve the food problem of the whole world.1. What does the underlined word “starved” in paragraph 2 mean in Chinese? A.挨...
C.visiting an exhibition D.doing scientific reasoning50.The underlined word “it” in Paragraph 2 refers to ___. A.active learning B.knowledge C.communication D.passive learning51.The author mentions the game Rumor to show that ___. A.a message may be changed when being passed on B....
The most intelligent robots can move and see. Their eyes are cameras. Their fingers can feel shapes and sizes of the objects. These robots have computer brains linked to their eyes and fingers, which control their actions. The expensive robots are used in scientific research. They do such job...
W: It's 9 o'clock now. Here Bill, I need to mail these letters right away. M: Ok, Miss #$%, I'll do it right now. W: And while you're there, please buy 10 one dollar's stamp. M: No problem, I should be back in half an hour. ...
B.are to be further studied C.are supported by scientific evidence D.are self-evident 点击查看答案&解析 单项选择题 Passage Three Space is a dangerous place, not only because of meteors but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket...
A spokesman for the research team at Navarro University in Spain says, “Proper alcohol intake, especially of wine, may be more likely to protect against, rather than promote, weight gain”. The International Scientific Forum on Alcohol Research reviewed the findings and agreed with most of the...
The new scientific discovery came during a trip. "We were travelling for fun. and one day I kicked over a log (圆木) and the fish came out," Taylor told reporters by telephone. He said he would make his study on the fish known to the public in an American ...
Total RNA was extracted using Qiazol Reagent (Qiagen), and RNA was quantified using a Nanodrop spectrophotometer (Thermo Scientific). To obtain cDNA, total RNA (1–3 μg) samples were subjected to 5′ and 3’ RACE using the SMART™ cDNA Amplification kit (BD Bioscience) in accordance with...
The pH of the liquid effluent was measured imme- diately after sampling to avoid CO2 loss from the liq- uid phase using a digital pH meter (Thermo Scientific Orion Dual Star, USA). Liquid effluent from the reac- tors was collected for TCOD, TAN and VFA analy- sis once per week...