采用水浸法探伤时，根据（）产生的回波情况进行缺陷评定。A.第一次表面回波之前和第二次

尿毒症的病人酸中毒时阴离子间隙升高

主动型基金同时以股票、债券为投资对象，以期通过在不同资产类别上的投资，实现收益与风险之间的平衡。（）

Have you ever dreamed of having a fashionable watch of great value?

A small watchmaker in Switzerland in 1922 designed the first automatic watch to show the day，month，and date．Only seven of these splendid watches were ever made and these watches were almost lost to history．Today，it is so hard to get an original watch that some watch historians are even willing to offer $ 200，000 for one．

These watches attracted a lot of people for their splendid color，fashionable style，and new uses in the 1920s．The owners of the watches were admired and set apart from the crowd．Because the number of the original watches is very limited，owning such a watch will make you feel very special．

Today，you are offered the same kind of watch with improvement．The watch has a 24-jewel mechanical(机械的)movement，the kind desired by watch collectors．The watchmaker has made the movement of the watch much more modern with an automatic rotor(上弦装置)so that the watch never needs to be wound by hand．The watch comes in a very beautiful case with a crocodile design on it．To get a watch in such a perfect design means to get a chance to know a piece of watch making history and to wear such a watch will show your personal taste and social position．

You can get the watch either in person or by mail at an affordable price．You will also receive good service from the watch seller．If you are not satisfied with the watch after you get it，you may simply return it within 30 days．Don’t miss the chance to realize your dream．

41．The original automatic watches are valuable because          .  

A．the watches were made many years ago

B．the watches were made by a Swiss watchmaker

C．only rich people can afford the watches

D．only a few watches of the kind were made

42．Watch collectors want to get the improved watch，especially for its         ．

A．mechanical movement                            B．splendid color

C．fashionable style                                            D．new uses

43．The purpose of the passage is to encourage the readers to          .

A．buy the watch                                            B．return the watch

C．wear the watch                                              D．receive the service

44．The passage is probably taken from a           ．

A．novel    B．magazine                C．text book                    D．science book

男性，65岁，查体时发现大便隐血阳性，提示消化道出血量至少大于（）

A.2ml

B.小于1ml

C.3ml

D.4ml

E.5ml

土鳖虫能破血逐瘀，续筋接骨。