题目

如图所示,是刷脸支付的应用场景。在支付时，用一小摄像头拍摄人像对用户进行人脸识别验证通过即可完成支付。下列关于摄像头所成像特点的说法正确的是( ) A . 倒立缩小的实像 B . 倒立放大的实像 C . 正立缩小的实像 D . 正立放大的虚像 答案：A 完形填空 　　As you probably know from the appeals being made for funds to fight cancer and from all the research that is being done 　　1　　 this subject-cancer is a great threat to the health and life of mankind．We will only discuss cancer in general 　　2　　, so you can have an idea of what 　　3　　 in a body that has cancer． 　　A cancer is a continuous growth in the body which doesn't follow the normal growth 　　4　　．The cells 　　5　　 the cancer spread through the body to parts which may be 　　6　　 the spot where the cancer begins．　　7　　 it is removed or destroyed the cancer can 　　8　　 the death of the person． 　　Cells in the body are growing 　　9　　．As they wear 　　10　　 and disappear, their places are 　　11　　 by new cells of exactly the same kind．But cancer cells look and act 　　12　　 from normal body cells． 　　When these cancer cells divide and increase in 　　13　　, they don't change into the fully grown form and then stop reproducing．　　14　　 they remain young cells and continue to reproduce in number until they are harmful． 　　As the cancer cells grow, they do not 　　15　　 in one spot, but separate and move in 　　16　　 the normal cells．They may become so 　　17　　 that the normal cells in this part of the body cannot continue to work or even remain alive．When the cancer 　　18　　 into the blood, it is carried to distant parts of the body．　　19　　 it may grow to form large masses which interfere(干扰)with the activities of the 　　20　　 cells． (1) [　　] A． below B． to C． on D． above (2) [　　] A． topics B． thoughts C． ideas D． words (3) [　　] A． reveals B． happens C． remains D． exists (4) [　　] A． method B． shape C． manner D． pattern (5) [　　] A． forming B． resulting C． affecting D． giving (6) [　　] A． under B． on C． next to D． far from (7) [　　] A． Unless B． However C． Until D． Whether (8) [　　] A． throw B． shorten C． break down D． lead to (9) [　　] A． one after another B． now and then C． all the time D． from time to time (10) [　　] A． off B． out C． away D． down (11) [　　] A． taken B． made C． changed D． moved (12) [　　] A． actively B． separately C． differently D． similarly (13) [　　] A． shape B． number C． size D． movement (14) [　　] A． So B． Moreover C． Therefore D． Instead (15) [　　] A． remain B． pause C． stop D． move (16) [　　] A． between B． among C． beyond D． under (17) [　　] A． many B． enough C． endless D． lot (18) [　　] A． arrives B． reaches C． develops D． gets (19) [　　] A． Where B． There C． Also D． Still (20) [　　] A． general B． common C． normal D． usual