答案CHAPTER 43 练习：A. 用括号内的词将汉语译成英语:1)The research about this enzyme can be traced back to 1970s.2)Recently, the use of reproducible resource has reached new heights.3)Vinegar could play on the taste buds.4)Pay attention to the harmony of appearance, smell, taste, texture whenconfecting the beverage.B. 根据课文判断下列陈述是否正确：1)T2)T3)T4) F5) F6)TCHAPTER 54练习：1)用表内提供的词组合成句子，描述图中勺的相对位置：Seven spoons are symmetrically and evenly spaced. Perforated spoon with black hand is at the far left and goes to the left of perforated spoon with stainless steelhand. Slotted spoons with black hand is next to perforated spoon with stainless steel hand on the right and goes to the left of slotted spoon with stainless steel hand. Three-cornered stirring spoon is next to slotted spoon with stainless steel hand on the right and goes to the left of solid spoons with black hand. Solid spoons with stainless steel hand is at the far right.2) 根据Fig 5-3 描述其余不同用具相对于球形切割器Ball cutter 的位置One ball cutter is placed horizontally below the center of the place, and a straight spatula goes to the top-left of it. Next to the straight spatula on the right is a cook’s fork. In front of the straight spatula is an offset spatula. A pie server is on the right of the offset spatula and in front of the cook’s fork.CHAPTER 63 练习：A．用建议的词进行汉译英1)Make the eye level even with the bottom of meniscus inside the tube.2)The electronic scales should be placed where they set level and where theyreceive a minimum amount of jarring.3)Use this method to analyze the arginine through HPLC, the linearity range isfrom 0.5 μg to 10 μg.4)Portion 100 ounce flour into 5 fractions.5)The column is 2 inch in diameter and 10 inch in highness.B. 用表内的词填空Now describe a similar experiment for finding the density of a beverage in a report style. Use the following words in the description. The procedure is: wash→dry→pour→measure→calculate.Density bottle was washed with brush firstly and then rinsed with alcohol. The empty bottle was dried and weighed by the scale. Then put exactly a volume of the liquid into the bottle. Next the full bottle was weighed by the scale and gained the mass. The mass of the liquid, therefore, can be calculated with subtraction between the mass of the full bottle and the mass of the empty bottle. Finally its density is calculated with the equation ρ = m/v. The operation should be done at the room temperature.E. 描述测量物体的单位Chapter 74 练习：构词1) Study the meanings of stems and affixes, and then give examples of words you know which are derived from these stems and affixes.2) Mach these stems and affixes with their meaningsChapter 83 练习：A. 学习实验方法和讨论结果的表述(用括号内的词或句型将汉文译成英文)1)The details of an analytical method for determination of the content ofglutamic acid is as following.2)Initiate the research with the determination of the pH range-finding.3)The food additive most frequently employed include sugar, salt, vinegar and soon.4)The enzyme reaction is terminated after a period of 2 hours by heating.5)According to the regulations, experimental dose-effect relationship must be noless than five concentration levels, each concentration level with triplicate parallel test, employed with a control.6)The sample should be watched in regard to the color changes in the process ofexperiment.7)Select the enzyme depending on the using temperature and pH.8)If there are indications that the liver is damaged after medicine feeding thenthe subacute experiment must be carried out.9)To establish of standard curves, pre-tests of at least three concentration levelsshould be conducted to establish the range.10)It could be demonstrated that this compound could be capable of showingdifferent colors under different pH in this experiment.11)In the experiment of detecting pesticide residue, GC has proved mostadaptable.12)In the chronic animal experiments, no less than four groups plus a controlgroup of experimental animals are employed, each consisting of at least 25 pairs of mice.13)The experiment should be operated in the temperature and humiditycontrolled room.14)The minimum toxic dosage level is expected to produce no toxicity, at the otherextreme the maximum dosage should be sufficient to cause pathological changes, but not cause high mortality before the end of the experiment. Otherdosages fall in between these two dosages.15)In the experiment need to be sampled at various intervals, the quantity ofsample in each group should increase accordingly.16)Observations and sampling should be made of every two hours.17)The change of the detective current is due to contamination of the electrode.18)Control group should be handled in the identical manner as the sample.19)The theory of that literature could be cited to show that our experimentalresults are right.20)This new chromatogram is about ten times as sensitive to pesticide residues asthe old one.21)Patient is as much as ten times more susceptible to toxic compounds thanhealthy individual.B. 构词1) Study the meanings of suffixes, stems and affixes, and then give examples of words you know which are derived from these suffixes, stems and affixes.2) Study the meanings of following stems and affixes. Mach these stems and affixes with their meaningsChapter 92 练习：A. 学习下列化学词汇的前缀、词干和后缀，根据它们的词义将下列的化学名词译成中文。