What is the author’s attitude towards the change（） A: She was indifferent to the changes. B: She preferred the past to the present. C: She was amazed at the changes. D: She believed that the changes were goo

在 People’s love to communicate never changes. 中changes是？ A: 单数 B: 复数 C: 不确定 D: 单复数同形

请在下面几个相同含义的句子中，选择出你认为是formal expression的句子： A: You can use this model to analyze the effects of several parameter changes. B: This model is suitable for the analysis of the effects of several parameter changes. C: One can use this model to analyze the effects of several parameter changes. D: You can analyze the effects of several parameter changes using this model.

When should the project baseline be changed A: A) It should not he changed. B: B) Only for changes that have been approved by the change control board. C: C) At each project team meeting. D: D) For all implemented changes.

When there is a change in the quantity demanded it means that the: A: hours the customer can buy products each day have increased. B: number of products in inventory have increased. C: quantity a consumer is willing to buy changes when the price changes. D: selling price of the products has not changed.

It's difficult to_____ the effects of these changes.

‌The lakes gradually ___________ deserts as the climate changes.‎

The lakes gradually ___________ deserts as the climate changes.

操作调光器开关，确保光的强度改变。 A: Operate the dimmer switch and make sure that the intensity of the light changes. B: Operate the dimmer switch and check the brightness of the light changes. C: Operate the dimmer switch and check the brilliance of the light changes.

The passage is based on the author's ______. A: experience of the changes B: admiration of the changes C: analysis of the changes D: hope for changes