问题
单项选择题
有关液体培养基的叙述，错误的是()
A．液体培养基不含琼脂
B．固体培养基加热溶化即成液体培养基
C．细菌在液体培养基生长可呈现混浊等现象
D．可用于细菌的生化反应试验
E．可用于增菌培养
答案
参考答案：B
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有关液体培养基的叙述，错误的是()
A．液体培养基不含琼脂
B．固体培养基加热溶化即成液体培养基
C．细菌在液体培养基生长可呈现混浊等现象
D．可用于细菌的生化反应试验
E．可用于增菌培养
参考答案：B
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| When it comes to eating smart for your heart, thinking about short-term fixes and simplify your life with a straightforward approach that will serve you well for years to come. Smart eating goes beyond analyzing every bite of food you lift 1 your mouth. "In the past we used to believe that 2 amounts of individual nutrients (营养物) were the 3 to good health," says Linda Van Horn, chair of the American Heart Association's Nutrition Committee. "But now we have a 4 understanding of healthy eating and the kinds of food necessary to 5 not only heart disease but disease 6 general," she adds. Scientists now 7 on the broader picture of the balance of food eaten 8 several days or a week 9 than on the number of milligrams (毫克) of this or that 10 at each meal. Fruits, vegetables and whole grains, for example, provide nutrients and plant-based compounds 11 for good health. "The more we learn, the more 12 we are by the wealth of essential substances they 13 ," Van Horn continues, "and how they 14 with each other to keep us healthy." You'll automatically be 15 the right heart-healthy track if vegetables, fruits and whole grains make 16 three quarters of the food on your dinner plate. 17 in the remaining one quarter with lean meat or chicken, fish or eggs. The foods you choose to eat as well as those you choose to 18 clearly contribute to your well-being. Without a 19 each of the small decisions you make in this realm can make a big 20 on your health in the years to come. | |||
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