Solar storms begin with dark sun spots that 0) ......... on the Sun’s surface. These spots then explode into a solar flare. Minutes later, the Sun 1) ......... dust to Earth. This cloud of dust usually 2) ......... Earth a day or two later. Solar storms can’t really do anything to hurt humans, but they can 3) ......... problems for our technology. For example, the supply of electricity may be 4) ......... during a solar storm. As a result, airlines may delay or 5) ......... their flights because their GPS technology doesn’t work. Satellite problems could leave us 6) ......... TV, radio or telephones. Clearly, something needs to be done. Scientists are working 7) ......... to protect technology systems from solar storms. One way to do this is to make our electricity systems stronger. Then they will be better 8) ......... when a storm happens. 9) ......... solution is better space-weather forecasts. Scientists can already forecast a big storm on its way to Earth one or two days before it arrives. In future, they hope to improve their forecasts by predicting the size and effect of a storm 10) ......... accurately

0 A produce B shape C form D make
1 A hits B shoots C sends D posts
2 A reaches B arrives C comes D appears
3 A do B bring C give D cause
4 A cut off C come apart B split up D broken up
5 A omit B cancel C leave D remove
6 A off B out of C without D from
7 A mainly B hard C heavily D strongly
8 A fit B ready C planned D prepared
9 A Else B Each C Other D Another
10 A must B many C much D more