This pasta（意大利面食）is no ordinary pasta. When imprinted with grooves（沟、槽），it can _________into tubes, and other traditional shapes as it cooks. This new technique would _________ uncooked pastas to take up less space. That means it would need less _________

Pasta lovers “are very picky about the shapes of pasta and how they _________ with different sauces,” says Lining Yao. She studies the _________ of smart materials at Carnegie Mellon University in Pittsburgh, Penn. Flat pasta like spaghetti holds less sauce than twisty types like rotini. But those shapes come at a(n) _________ :bigger packages. For some _________ pasta, more than 60 percent of the package holds just air.

Yao and her colleagues _________ a series of grooves onto one side of each noodle. Then they cooked that pasta. The pasta _________ water as it cooked. But the liquid couldn’t go as fully into the grooved side. So that side became less expanded than the ____________ side．That asymmetric（不对称的）expansion bent the ____________ flat noodle into a curve（曲线）．By changing the arrangement of the grooves，the researchers ____________ the final shape.

Yao and her colleagues reported their ____________ in Science Advances.

The pasta ____________ good camping food, Yao says. A member of her team brought it along on a recent hiking trip. The pasta slips easily into a small pack. But it cooks into a(n) ____________ shape.