Archaeology as a profession faces two major problems. First, it is the poorest of the poor. Only paltry sums are available for excavating and even less is available for publishing the results (5) and preserving the sites once excavated. Yet archaeologists deal with priceless objects every day. Second, there is the problem of illegal excavation, resulting in museum-quality pieces being sold to the highest bidder. (10) Iwould like to make an outrageous suggestion that would at one stroke provide funds for archaeology and reduce the amount of illegal digging. Iwould propose that scientific archaeological expeditions and governmental (15) authorities sell excavated artifacts on the open market. Such sales would provide substantial funds for the excavation and preservation of archaeological sites and the publication of results. At the same time, they would break the illegal (20) excavator's grip on the market, thereby decreasing the inducement to engage in illegal activities. You might object that professionals excavate to acquire knowledge, not money. Moreover, ancient artifacts are part of our global cultural heritage, (25) which should be available for all to appreciate, not sold to the highest bidder. Iagree. Sell nothing that has unique artistic merit or scientific value. But, you might reply, everything that comes out of the ground has scientific value. Here we part company. (30) Theoretically, you may be correct in claiming that every artifact has potential scientific value. Practically, you are wrong. I refer to the thousands of pottery vessels and ancient lamps that are essentially duplicates of (35) one another. In one small excavation in Cyprus, archaeologists recently uncovered 2,000 virtually indistinguishable small jugs in a single courtyard. Even precious royal seal impressions known as I'melekh handles have been found in abundance (40) —more than 4,000 examples so far. The basements of museums are simply not large enough to store the artifacts that are likely to be discovered in the future. There is not enough money even to catalog the finds; as a result, they 368 (45) cannot be found again and become as inaccessible as if they had never been discovered. Indeed, with the help of a computer, sold artifacts could be more accessible than are the pieces stored in bulging museum basements. Prior to sale, each could be (50) photographed and the list of the purchasers could be maintained on the computer. A purchaser could even be required to agree to return the piece if it should become needed for scientific purposes. It would be unrealistic to suggest that illegal (55) digging would stop if artifacts were sold on the open market. But the demand for the clandestine product would be substantially reduced. Who would want an unmarked pot when another was available whose provenance was known, and that was dated (60) stratigraphically by the professional archaeologist who excavated it? The primary purpose of the passage is to propose (A) an alternative to museum display of artifacts (B) a way to curb illegal digging while benefiting the archaeological profession (C) a wayto distinguish artifacts with scientific value from those that have no such value (D) the governmental regulation of archaeological sites (E) a new system for cataloging duplicate artifacts

A选项D选项动作发出者分别是什么A为什么不对 这个题能帮忙分析一下吗

请数学老师解答一下 谢谢 答案是星期四十点 我只能算出星期四12点

老师，对于这题ABC的their还有DE的they.他们指代有没有问题呢，就近的话我可以理解成指代records吗The loan company announced it would soon lend money to borrowers with proven records of their not paying back their loans on time,collectively known as subprime lending market. A.of their not paying back their loans on time B.of not paying back their loans on time, a group C.of not paying back their loans on time,with such a group D.that they do not pay back their loans on time. E.that they do not pay back their loans on time,such a group

图片里的并列不是很明白，还得麻烦老师帮忙将一下谢谢，此外， 下面这and连接的并列，不考虑语义，前面是过去分词，后面是it+过去分词这种属于并列吗？brightened the Northern Lights and it possibly knocked

本题是og19、sc720题，答疑器搜不出来，有如下疑问，谢谢老师 ①A选项不太明白， ②so as to 有没有这种说法？ ③D选项的enough和so as to能连用吗 ④E选项的so much as to有这种说法吗

希望金老师回答，这个题D选项有两个because怎么翻译整个句子呢？

老师，我记得所有质数里面只有2一个质数吧？不过答案还是-2，对吧？

张老师您好，这篇文章这道题目我不是很理解。第一句话说some historians认为during世界大战，unions和African A的关系是strong alliance，结束以后就没有了；第二句话说other scholars认为这些unions（organizd labor)一直都在帮助AA，可是并没有提到他们两者在二战之中的关系，所以不太懂为什么选C？老师您能不能说一下您的解题思路以及我思维上的一些问题？谢谢！

老师 这道题目不会做，我不理解为什么有3个男生，3个男生的位置都可以变，所以应该A33*A33，答案是A22，不懂求解

老师，这种题目有重复的字母我经常会有点混淆，我一般用的方法就是6C1*5C2*3C3，就是假设一共有6个空位，字母a选一个位置，还剩5个位置给b选两个位置，请问这种思路对吗？还有答案里的思路，我旁边注释的思路对嘛？求老师指教这类题目好的解题方法，谢谢！