题目内容
—Why does the lake smell terrible?
—Because large quantities of water______.
| A.have polluted | B.is being polluted |
| C.has been polluted | D.have been polluted |
C
解析试题分析:情景对话 句意为:--这片湖闻着咋这么难闻呢?
--因为大片的水都被污染了
从语态上讲,动词有主动和被动之分;如果主语和谓语动词之间是主动关系,则为主动语态,反之,则为被动语态。根据答语,主语为water,谓语为pollute,显然为被动关系,可排除A.从时态角度讲,此题涉及进行时和完成时,根据答语可知,水被污染这件事造成了湖被污染,产生了影响,这是现在完成时的用法。据此,可排除B.从主语和谓语一致关系看,通常情况下,不可数名词后跟单数谓语,不过前面有large quantities of修饰时,谓语需要复数形式,推出答案D
考点:对动词的时态和语态,主谓一致进行考察
点评:此题属于较难语法题。主要考察考生对动词时态和语态和主谓一致的掌握程度和熟练情况,作答此类题型,可用排除法,将明显错误的选项排除。
What is Math Anxiety?
Math anxiety or fear of math is actually quite common. Math anxiety is quite 36 to stage-fright. Why does someone suffer 37 ? Fear of something going wrong in front of a crowd? Fear of 38 the lines? Fear of being judged 39 ? Fear of going completely blank? Math anxiety conjures(使现出) up fear of some type. The fear that one won't be able to do the 40 or the fear that it's too hard or the fear of failure which often stems(起因于) from having a lack of 41 . For the most part, math anxiety is the 42 about doing the math right, our minds draw a 43 and we think we'll fail and of course the more frustrated and anxious our minds become, the 44 the chance for drawing blanks. Added pressure of having time limits on math tests and exams also cause the levels of anxiety to grow for many students.
Where Does Math Anxiety Come From?
Usually math anxiety stems(起源于) from 45 experiences in mathematics. Typically math phobias(恐慌症) have had math presented in such a fashion that it led to limited understanding. Unfortunately, math anxiety is often 46 poor teaching and poor experiences in math which typically leads to math 47 . Many of the students I've encountered with math anxiety have demonstrated an over reliance on procedures in math as opposed to actually understanding the math. When one tries to memorize procedures, rules and routines without much 48 , the math is quickly forgotten and 49 soon sets in. Think about your experiences with one concept — the division of fractions(分数). You probably learned about reciprocals(倒数) and inverses. In other words, ‘It’s not yours to reason why, just invert(反转) and multiply(乘)’. Well, you memorized the rule and it 50 . Why does it work? Do you really understand why it works? Did anyone ever use pizzas or math manipulative(巧妙处理的) to show you why it works? If 51 , you simply memorized the procedure and that was that. Think of math as memorizing all the procedures — 52 if you forget a few? Therefore, with this type of strategy, a good 53 will help, but, what if you don’t have a good memory. Understanding the math is critical. Once students 54 they can do the math, the whole notion of math anxiety can be overcome. Teachers and parents have an important 55 to ensure students understand the math being presented to them.
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