单选题. Questions 8 to 11 are based on the conversation you have just heard.1.
单选题. Questions 16 to 18 are based on the passage you have just heard.1.
单选题《复合题被拆开情况》 Three children in every classroom have a diagnosable mental health condition. Half of these are behavioural disorders, while one third are emotional disorders such as stress, anxiety and de
单选题Where to Get Healthier in 2018A From hotels and cruises to airports，airlines，safaris 游猎 and group tours，wellness promises to be everywhere in the world of travel.Five years ago wellness on the road me
单选题. Questions 20 to 22 are based on the passage you have just heard.5.
单选题Cash is unlikely to go away soon.Coins and paper 26_____ remain the most popular ways to pay for things in most countries.But in the long term，cash appears to be in a 27_____ battle with electronic pa
单选题14. The notice came around two in the afternoon ______ the meeting would be postponed.
单选题5.
单选题. Questions 12 to 15 are based on the conversation you have just heard.5.
单选题. Questions 8 to 11 are based on the conversation you have just heard.1.
单选题Mounting evidence shows that behavioral-activation BA therapy is just as effective as cognitive-behavioral therapy CBT in treating depression.Unlike CBT，BA is an outside-in 26_____ in which therapis
单选题The American Psychological Association APA warns that the loneliness epidemic now represents a threat to public health that exceeds that of obesity.Before getting into the specifics，we need to have a
单选题. You might think a little global warming is good for farming. Longer, warmer growing seasons and more carbon dioxide (CO2)—what plant wouldn't love that? The agricultural industry basically agrees on that. But global warming's effects on agriculture would actually be quite complicated—and mostly not for the better. It's true that some crops will prosper on a warmer planet, but the key word there is "some." According to a government report, higher CO2 levels and longer growing seasons will increase yields for fruit growers in the Great Lakes region. But many major American crops already use CO2 so efficiently that more of it probably won't make much difference to them. What will make a difference are all the other things we'll have more of as temperatures rise—namely droughts (干旱), bugs and big storms. More droughts mean lower crop yields. Melting snow in the Western U.S. will increase water availability in spring but decrease, it in summer, forcing farmers to change cropping practices. As insects that eat crops adapt their migration patterns to our warmer climate, farmers will have to either use more insecticide or plant hardier crops. Farmers on both coasts are already starting to reap some of what the nation's fossil-fuel addiction has sown. Crops in those regions require a certain number of colder days, or "winter chill." before they break dormancy (冬眠) and begin flowering. Too few cold days breaks the plants' flowering schedule which in turn affects pollination (授粉) and hurts yield. So, given how much is at stake for them, how are farm states working to shape climate legislation? In response to agricultural demands, the Waxman-Markey bill frees the agricultural industry from CO2 emission limits and gives up control over what activities guarantee carbon offset credit to the Agricultural Department. Some farmers—and some farm state congressional leaders—have argued that because plants convert CO2 into oxygen, agricultural lands store more CO2 than they emit. This is only theoretically true. What we can say with certainty is that, like most big industries, farming is fossil-fuel intensive—large quantities of CO2 are emitted from farm equipment such as irrigation pumps and tractors.1. Under the influence of global warming, the yields of American crops will ______.
单选题. Questions 3 and 4 are based on the news report you have just heard.3.
单选题《复合题被拆开情况》 At school our children are taught to add up and subtract but, extraordinarily, are not shown how to open a bank account—let alone how to manage their finances in an increasingly complex and