下列各句中，加点的成语使用不恰当的一项是（   ）

对温室大棚里的农作物，采取适当措施能提高光合作用效率，增加产量，以下措施不能起到这种作用的是（  ）

俄罗斯联邦是世界上国土面积最大的国家，几个世纪以来，生活在这片土地的民族，在世界舞台上扮演着特殊的角色，请阅读下列材料并回答相关问题。

材料一：……然而到了19世纪60年代，它们（俄国）弱点暴露无疑，内部很不稳定，对外则比想象中虚弱许多。其关键弱点既是政治的，又是经济的。

——（英）艾瑞克•霍布斯鲍姆《资本的年代》

材料二：为了保证农民在比较自由地支配自己的经济资源的基础上正确和安心地进行经营，为了巩固农民经济和提高其生产率，以及为了确切地规定农民所应担负的国家义务，应当以实物税代替余粮收集制这种国家收购粮食、原料和饲料的方法。……在纳税后剩余的一切粮食、原料和饲料，农民可以全权处理，可以用来改善和巩固自己的经济，也可以用来提高个人消费，用来交换工业品、手工业和农产品。允许在地方经济流通范围内实行交换。

——俄共（布）第十次代表大会关于以粮食税代替余粮收集制的决议（1921年3月）

材料三：（20世纪30年代）在西方经济确实是一团糟的同时，苏联正在继续进行经济发展方面的独特实验。虽然五年计划伴有严厉的压制和民众的贫困，但实质上是成功的。苏联从一个以农业为主的国家迅速上升为世界第二大工业强国。这种前所未有的成就具有国际性的影响，尤其是因为当时种种经济困难正使西方陷于困境。

                                            ——（美）斯塔夫里阿诺斯《全球通史》

材料四：我们不得不付出代价，为苏联经济体制所固有的过分依赖原料工业和国防工业而损害日用消费品生产的发展付出代价；为不够重视现代经济的关键部门，如信息、电子和通信付出代价；为不允许产品生产者的竞争付出代价，这妨碍了科学技术的进步，使俄罗斯经济在国际市场上没有竞争力；为限制甚至压制企业和个人的创造性和进取精神付出代价。今天我们在收割那几十年的苦果，既有物质上的，也有精神上的苦果。

——普京《千年之交的俄罗斯》

阅读理解
    Spring is an inviting season for outdoor activities. But be careful—the warm weather is also a hotbed for viruses(病毒) and disease.  
This March, the influenza(流行性感冒) A(H7N9) virus hit Shanghai, Anhui, Jiangsu and Zhejiang. It was reported that by April 11 at least 35 people had been infected (被感染的) with the H7N9 virus, and nine of them had died.
    The influenza A (H7N9) virus is one type of influenza A H7 viruses. Influenza A H7 viruses normally spread among birds.
This is the first time human infections with H7N9 viruses have been reported in China. Earlier reports were about H5N1 and H1N1.
All the three viruses are influenza A viruses but they are not the same. H7N9 and H5N1 are animal influenza viruses that could infect people. However, H1N1 viruses can be divided into two groups. One group can normally infect people and the other normally infects animals. Also, H1N1 can spread from human to human, but H7N9 probably can't, according to the World Health Organization (WHO).
Most people infected with H7N9 looked like they had the common flu. Some people had bad pneumonia(肺炎). They suffered from a fever, a cough and shortness of breath.
    But don't be afraid – it is not easy to be infected with the virus. One of the possible reasons is close contact with sick poultry (家禽) waste. People may also be infected through breath, according to National Health and Family Planning Commission.
Here are some tips from the WHO that can protect you from being infected.
    Wash your hands with soap and running water before you eat, after you use the toilet, and after touching animals or animal waste.
When coughing or sneezing cover your mouth and nose with a mask(口罩)，tissue(纸巾) or a sleeve.
    Get a good rest and do exercises, which will help make your body strong enough to stand up to the virus.

要得到函数 $y=2\sin \left(3x-\frac{\pi }{5}\right)$ 的图象，只需将函数y=2sin3x的图象向____．