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[单选题]
I drove to Zhuhai for the air show last week. Is that the reason ____ you had a few days off?(1分)
A
Why
B
when
C
what
D
Where
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参考答案
试题答案：
A
答案解释：
解题思路：考查定语从句，reason做先行词，表原因故选why 在定语从句中做原因状语
相关题目
2. ResourcesCanBe said toBe scarce inBothAnAbsoluteAnd relative sense: the surface of the Earth is finite, imposingAbsolute scarcity;But the scarcity thatConcerns economists is the relative scarcity of resources inDifferent uses. Materials used for one purposeCannotAt the same timeBe used for other purposes; if the quantity ofAn input is limited, the increased use of it in one manufacturing process mustCause it toBecome lessAvailable for other uses.TheCost ofA product in terms of money may not measure its trueCost to society. The trueCost of, say, theConstruction ofA supersonic jet is the value of the schoolsAnd refrigerators that will neverBeBuiltAsA result. EveryAct of production uses up some of society’sAvailable resources; it means the foregoing ofAn opportunity to produce something else. InDeciding how to use resources most effectively to satisfy the wants of theCommunity, this opportunityCost must ultimatelyBe taken intoAccount.InA market economy the price ofA goodAnd the quantity suppliedDepend on theCost of making it,And thatCost, ultimately, is theCost of not making other goods. The market mechanism enforces this relationship. TheCost of, say,A pair of shoes is the price of the leather, the labor, the fuel,And other elements used up in producing them.But the price of these inputs, in turn,Depends on what theyCan produce elsewhere—if the leatherCanBe used to produce handbags thatAre valued highlyByConsumers, the prices of leather willBeBid upCorrespondingly.26. WhatDoes this passage mainlyDiscuss?____A. The scarcity of manufactured goods.B. The value of scarce materials.C. The manufacturing of scarce goods.D. TheCost of producing shoes.
We should not____Any proposalBefore makingACareful study of it.
______ can help curing his disease is worth trying, as sometimes folk remedy really works.(1分)
As a defense against air - pollution damage, many plants and animals____ a substance to absorb harmful chemicals.
The children bad to____ themselves while their parents worked.
21.It’s important to be on your guard when you are traveling to foreign countries. We’ve all heard the stories of unwilling travelers having their wallets stolen or finding themselves in the wrong part of town. Read the following tips and find out how you can stay safe while traveling abroad.First, you’d better carry a small amount of cash and a copy of your ID with you at all times. There is no need to bring large amounts of cash with you. Use your credit card instead. Second, don’t forget to lock your valuable things either in the safe in your hotel room or in the main hotel safe. Third, keep your wallet in your front pocket. For the ladies, it’s better to take a small purse under your arm so that there is no way someone’s hand could get in there without you noticing it. Fourth, be aware of your surroundings. Look around when walking, and avoid keeping your head low or being in a sleepy or drunk condition. Fifth, you should always know where you’re going. Look at the map before you leave the hotel so that you know where you’re going and how to get there.Finally, it will be a good choice to travel with your family, a friend, or a business partner if possible. It’s always better to travel in pairs than to go alone.(10分)21.1 The passage offered ______ traveling suggestions to the readers.(2分)A. fourB. fiveC. sixD. seven
23.5 As the subject of medical experiments, the dog can also get benefit because ________.(2分)
--- _______ is the engineer’s husband? --- The neighbor of your brother in the corner.(1分)
23.2 Which of the following was NOthe permanent feature of the street the writer was walking down?____(2分)
42. A) accepts B) rejects C) insists D) resists
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