应用各种物理因子如光、电、色、温湿度等及机械设备来防治害虫的方法,称为 。
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利用昆虫病原微生物或其代谢产物来防治害虫称为微生物防治,或称为“ ”
Fill in each of the blanks with an appropriate word from the following words. Change the form if necessary.nationlikelydedicatedeephowbalancecontributionpotentialexploreproductThe moral imperative begins by considering the value of education which is much 1) ________ than earning potential or building human capital. Education is what it takes to lead fuller lives and to 2) ________ to our nation and the world.Higher education in particular affords students the opportunities to 3) ________ history, debate important issues, and discover their passions and 4) ________.Our founders understood 5) ________ important education is to the idea ofAmericaas a just, equitable, and 6) ________ society. A nation of educated individuals is more 7) ________ to strengthen the institutions: in government, in business and in the schools they rely upon.Consider graduation rates. Fifteen percent of our high schools 8) ________ half of our dropouts, and these schools are disproportionately in low-income areas with mostly minority students. 9) ________, one of every two African American and Hispanic students drops out of high school.If we are a nation 10) ________ to equality, we cannot be satisfied with the status quo. Helping more students make it to college and succeed there is a morally urgent challenge。
Fill in each of the blanks with an appropriate word from the following words. Change the form if necessary.controversialendureinfluencereasonablereinpoliticalprimaryneedswordsbehaviorWhether teachers can "talk politics" in class is a (1) _______ issue. Recently Soochow University proposed to (2) _______ in the appearance of university instructors on TV (3) _______ shows. Some people support (4) _______ involvement of professor in those political programs, but others think the teacher's (5) _______ responsibility is to meet student (6) _______. Young people will be (7) _______ by many people, including teachers. But it is their (8) _______, not their (9) _______, that will have an (10) _______ impact on the students.
下列哪种基质蛋白不是由成骨细胞所合成
A. 骨桥蛋白
B. 骨涎蛋白
C. 降钙素
D. 骨钙素