题目内容：

    East Africa is experiencing the worst desert locust outbreak in decades. Climate events have accelerated breeding of the pest across the region, and with a sudden rise in the locust population expected in coming weeks, urgent actions and funds are needed to prevent a human crisis.

Twenty million people in six of the eight East African countries are most affected by an ongoing desert locust outbreak at risk of serious food insecurity. Considered among the most destructive of moving pests, an adult locust can consume 2g of plants per day, affecting crops and grasslands. A group typically holds 20 to 150 million locusts per square kilometer and can move hundreds of kilometers per day, invading areas covering millions of square kilometers. An active group, therefore, can destroy crops and grasslands within a very short period of time.

That global warming could increase the risk of desert locust crisis was proposed over ten years ago, and in February, the UN Secretary-General António Guterres stated that the current outbreak is linked to the effects of climate change: “warmer seas mean more perfect breeding ground for locusts”. The outbreak has its origins in 2018, when a series of windstorms in the Arabian Peninsula (阿拉伯半岛) enabled the warm and wet conditions the desert locust requires to breed and band undetected in remote regions. Though our focus here is migration west, dreadful outbreaks of the desert locust have been experienced to the east.

The situation is going out of control. A rescue operation and financial support admit no delay.

The Food and Agricultural Organization (FAO) can take out only US$138 million for rapid response and immediate action — controlling the spread of the desert locust and safeguarding livelihoods. They say the maths is clear: about half the funding (资助) is needed for supervision, ground and sky control, and uniting efforts; the other half is needed for livelihoods and food security of farmers. As for the huge gap, they have called on the international community to act now through funding. However, by the end of February, just US$69 million had been promised.

This most alarming crisis has developed and is worsening in East Africa. The funds needed to control the situation become very difficult to achieve and the gap is a big concern.

1.Why does the crisis happen in East Africa?

A.There is a big population there.

B.There are large deserts and grasslands.

C.Africa lies west of Arabian Peninsula.

D.Good climate for breeding plays a role.

2.Why does the writer list those figures in Para 2?

A.To warn of the terrible damage by locusts.

B.To help us understand how locusts live.

C.To show how many locusts there are now.

D.To draw a picture of the present Africa.

3.What can we infer from the text?

A.The crisis is not noticed until recently.

B.More fund is needed to prevent the crisis.

C.The crisis has been the focus of the world.

D.Locusts are all from the Arabian Peninsula.

4.Which is the best title for the text?

A.Killing locusts before too late

B.Global warming, a world problem

C.Funding Gap for Locust Crisis

D.Africa, a crisis-stricken place