求真、求新、向善、向上 河北省威县第一中学专用 24,Wh the cs given in the second paragraph was popular B. To state the fans BTs possessed C, T le for wise che D. To list the strengths of using english 25. Who is a rapper D. Jung kook 26. What do the bts“Army” value most? A. The boy bands appearance. The changeable singing style. C. The songs positive energy. D. The connect ions with fans 27. What's the best title for the text A BTS Becomes Famous in the USA B. South Korean music hit the usa What Made bts well received BTSs Dynamite Blows Up US Charts Scientists in Maine are using DNA to try to preserve the remaining populations of a fish that lives in 14 lakes and ponds in the state and nowhere else in the continental United States The scientists are turning their eye to the Arctic charr(ff), which is a species of fish in Maine that has lived in the state for one thousand years, The charr face threats such as invasive predators and a warming climate. They are also difficult to discover, making them difficult for researchers to track Michael Kinnison, a professor and other scientists are working with the state to make the fish keep surviving. Kinnison is working on a project to collect"environmental DNA he water bodies where the fish The project in volves collecting water samples from the lakes and ponds w here the fish are known to live, and studying DNA that they and other organisms shed. It will provide vita information scientists can use to keep charr populations stable Arctic charr are known to seafood lovers because they re farmed for use as food. But t find one in the lower 48 states, an angler(f#J4)can only go to one of a group of remote rural ponds and lakes in Maine, some of which are barely accessible to humans. The project to collect their DnA in Maine launched in 2017, and is expected to cont hrough this summer. One of the biggest threats to the charr is the presence of invasive rainbow smelt, a species of small fish that competes with charr for food and are suspected of ating charr's young. The move toward using advanced tools such as environmental dNA is a smart que part of the state's natural landscape and jeo pardized by climate change. The fish like cold water, and they're at the very southern end of their range in Maine. Who knows if this is the end, or if we are able to stabilize it, " Sikorsky said, "So far so good is the best you can sa Why does it hard to follow the track of the chari A. They swim swiftly. B. They re extremely rare. C. They are tough to find D. They re in a bad situation. 29. What does the author think of Kinnison's projec C. Ord 30. Why does Kinnison collect"environmental DNA"? B. To have the charr s C. To study the charr's life D. To change the water bodies
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