When a person sneezes, 崗e droplets can Spread diseases. Now ress
8 that blants
have asomewhat 多 problem. Plant diseases can also spread througeh ater d
全 Water drops
世at jump offF leaves 一 aplant's version ofa sneeZes
Scientists already knew earlier that wind and splashes of rainw ater can move bacteri
and other germs from leaf to leaf (edge Other possible transmission routes. Tesearechers at
Virginia Tech observed water drops on the leaves of wheat plants that were lnfected witt leaf
must They found that the sick plants could “sneeze”and _為 timy water drops filled witl
Jeafrust germs, Spreading the disease to heighboring plants.
The researchers noticed that small drops of water on the wheat leaves Would move t6
combine and form a ]arger drop. As 也ey were moving, the energy of the droplets in motion
Would be released. This energy allowed the water 2 into the air which looked just like
SneezZlng!
However, not all plants can sneeze. The ability is 2 to those With leaves that are
hydrophobic, or repel water 一 a special feature that forees the liquid to move away when the
eaf is exposed to 半
太 外1 (A) similar (B) miserable
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Cl realistic (D) temporary
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(CO With aview to (D) To the extent 0+
信 (2 shoot out 選hold On (C) come across 售 give up
【 多 (A) jump (B) to jump (C@ jumping D) jumped
私 為 (A) curious (By relative (C) unique Di primitive
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