根据短文理解，选择正确答案。

    It was winter, and Mrs. Smith wanted to do a lot of shopping. She waited until it was Saturday, when her husband was free, and she took him to the shops with her to pay for everything and to carry for her what she would buy. They went to a lot of shops, and Mrs. Smith bought everything she could think of. She often stopped and said, "Look, Peter! Isn't that beautiful'?"

    Mr. Smith then answered, "All right, my dear.  How much is it?" And he took out money to pay for it.

    It was almost dark when they came out of the last shop, and Mr. Smith was tired. He was thinking about a nice drink by the side of a warm fire at home. Suddenly his wife looked up at the sky and said, "Look at that beautiful moon, Peter. "

    Without stopping, Mr. Smith answered immediately, "All right, dear. How much is it?" Then he took his wallet out of his pocket.

将点A（﹣2，﹣3）向右平移3个单位长度得到点B，则点B所处的象限是（  ）

下列关于生物工程相关知识及应用成果的叙述，不正确的有（    ）
①采用化学合成法合成的目的基因没有内含子和编码区上下游的非编码区，编码序列与细胞内的目的基因也不一定相同
②制备人工种子时，所得胚状体应具有胚芽、胚根、子叶、胚乳等结构
③一种基因探针可用于检测多种遗传性疾病
④限制酶基因只存在于微生物体内，通常用鸟枪法来获得，它能识别多种核苷酸序列并在一定位点进行切割
⑤质粒的复制既能在自身细胞中完成，也能在宿主细胞内完成
⑥在对癌细胞有特异性结合能力的单抗上连接抗癌药物可制成定向消灭癌细胞的“生物导弹”

50多年来，人类已向太空发射了5000多颗卫星及其他航天器，火箭残骸，卫星碎片、飞船脱落的部件、宇航员失落的工具等都成为在太空游荡的垃圾。当地球轨道上废弃的人造卫星及其碎片的数量达到一定规模时，人类可能不得不停止一切航天活动。材料给我们的哲学启示是

为了了解火星上是否有生命存在，科学家设计了一个实验方案：假如宇宙飞船能将火星土壤带回地球，我们可将火星土壤放入一个密闭的箱子内，然后向箱内通入混配气体（彻底除去微生物），并添加无机盐和有机营养物质，接着我们可以通过测定气体的成分比例是否发生变化来得出判断．这一实验基于的假设是（   ）