Choose A, B, C, or D that best completes each sentence. Humans_______ atmospheric carbon dioxide concentration by a third since the Industrial Revolution began.

Choose the answer that is nearest in meaning to the printed before it. Please watch your steps as you get off.

Choose A, B, C, or D that best completes each sentence. All of the disasters resulted from_______ will continue to have a devastating effect on socio-economic development.

Choose A, B, C, or D that best completes each sentence. Carbon dioxide is released through _______  processes such as respiration and volcano eruptions and through__________activities such as deforestation, land use changes, and burning fossil fuels.

Choose A, B, C, or D that best completes each sentence. Viet Nam has been named among the 12 countries most _______ for climate change by the World Bank.

Choose A, B, C, or D that best completes each sentence. _______ the desalination plant, the company could offer an effective solution to the problem of water scarcity.

Choose A, B, C, or D that best completes each sentence. Methane is a far more active _______ than carbon dioxide, but also one which is much less abundant in the atmosphere.

Choose A, B, C, or D that best completes each sentence. We admired the Japanese _______ the city of Fukushima after the disaster.

Choose A, B, C, or D that best completes each sentence. The next dry season will be extremely severe _______ further saltwater intrusion, water  and rain shortages, and heat waves.

Identify the one underlined word or phrase. A, B, C or D - that must be changed for the sentence to be correct.

It is difficult to imagine (A)  him accepting (B) the decision without (C) any objection (D).

Choose A, B, C, or D that best completes each sentence. Certain _______  in the atmosphere, such as carbon dioxide, methane and nitrous oxide, block heat from escaping.

Choose the answer that is nearest in meaning to the printed before it. Why not participate in the English Speaking Contest

Choose A, B, C, or D that best completes each sentence. The public praised the local farmers for _______      millions of trees on the surrounding hills.

Choose A, B, C, or D that best completes each sentence. A layer of greenhouse gases - primarily water vapor, and carbon dioxide - acts as a _______  blanket for the Earth, absorbing heat and warming the surface.

Choose A, B, C, or D that best completes each sentence. Most climate scientists agree the main cause of the current global warming trend is human expansion of the greenhouse _______.

Choose A, B, C, or D that best completes each sentence. The low _______ in the Mekong Delta leads to acute saline intrusion much deeper than the traditional 30 to 40km of mainland that is contaminated with saltwater.