综合写作：
范文：
ETS TOEFL
Writing | Question 1 of 2
The red palm weevil is a small plant – eating beetle that infests and feeds on palm trees, ultimately leading to the trees’ death. Originally from tropical Asia, the red palm weevil has spread to many different locations in the world, prompting experts to come up with strategies to contain the spread of the troublesome pest.
Destroy infested trees
One strategy to get rid of the weevil is to cut down and destroy palm trees as soon as they show visible signs of infestation. Trees at risk of being infested by weevils should be routinely monitored for symptoms of infestation, such as yellowed leaves or small holes in their trunks, so they can be promptly destroyed if any symptoms are observed. The economic and ecological consequences of weevil infestation have been substantial; detecting and destroying trees showing signs of infestation as early as possible provides the best chance to limit the spread of the pest.
Use traps
Another strategy would be to capture the weevils in insect traps, using a pheromone mixture to attract them to the traps. Pheromones, which are chemicals produced naturally by the weevils, play an important role in their reproduction and social behavior. Scientists can produce pheromones artificially. Traps containing a mixture of artificial weevil pheromone and poisonous chemicals could be placed near infested palms; the pheromones in the traps would attract the weevils, and the poison would eliminate them.
Apply pesticides
Finally, red – palm weevils can be eliminated through an application of pesticides—chemicals that kill weevils directly. Pesticides can be sprayed on trees, injected into tree trunks, or even infused into the soil, where they will be absorbed by the tree and kill off any weevil population living there.
学术写作：
Your professor is teaching a class on Economics. Write a post responding to the professor’s question.
In your response, you should do the following.
- Express and support your opinion.
- Make a contribution to the discussion in your own words.
An effective response will contain at least 100 words.
Dr. Diaz
We are discussing recent trends in consumer behavior. One trend is a decrease in the use of cash money. Consumers don’t use physical money to pay for things as much as they used to. Online shopping has a big impact on this. But even when shopping in person, more people are using credit cards, cash cards, and phone apps to make purchases. So do you think the decrease in using cash is positive or negative? Why?
Claire
I think it’s great. I avoid using physical money. The main reason is that I don’t want to carry around a wallet stuffed with paper bills and coins. I carry my mobile phone with me anyway, so why carry two things when I only need one? Using my phone to pay for things in the store is a huge convenience.
Kelly
I think it’s negative. It’s easier to keep track of your spending when you use cash. When paying with cards or phone apps, it’s easy to ignore how much you spend and go over your budget. But with physical money, you are more aware of your spending, and if you run out of cash, you can’t spend any more!
